./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.09.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.09.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 --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 7a853b3510c5613f54b8d6b23d474c4e32a31e8aca13042a511ee4a733a5c07a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 13:01:08,172 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 13:01:08,229 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-10-13 13:01:08,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 13:01:08,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 13:01:08,264 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 13:01:08,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 13:01:08,265 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 13:01:08,265 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 13:01:08,267 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 13:01:08,267 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 13:01:08,267 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 13:01:08,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 13:01:08,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 13:01:08,269 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 13:01:08,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 13:01:08,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 13:01:08,270 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 13:01:08,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 13:01:08,270 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 13:01:08,270 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 13:01:08,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 13:01:08,271 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 13:01:08,271 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 13:01:08,271 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 13:01:08,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 13:01:08,271 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 13:01:08,272 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 13:01:08,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 13:01:08,272 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 13:01:08,272 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 13:01:08,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 13:01:08,272 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 13:01:08,273 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 13:01:08,273 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 13:01:08,273 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 13:01:08,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 13:01:08,273 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 13:01:08,274 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 13:01:08,274 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 13:01:08,274 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 13:01:08,276 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a853b3510c5613f54b8d6b23d474c4e32a31e8aca13042a511ee4a733a5c07a [2024-10-13 13:01:08,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 13:01:08,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 13:01:08,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 13:01:08,488 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 13:01:08,488 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 13:01:08,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.09.c [2024-10-13 13:01:09,706 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 13:01:09,839 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 13:01:09,839 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.09.c [2024-10-13 13:01:09,845 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9343bdfc0/4f952ee9d8804d9dbc37fb7b6c4f3234/FLAG312fd9458 [2024-10-13 13:01:10,266 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9343bdfc0/4f952ee9d8804d9dbc37fb7b6c4f3234 [2024-10-13 13:01:10,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 13:01:10,269 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 13:01:10,271 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 13:01:10,271 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 13:01:10,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 13:01:10,275 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:01:10" (1/1) ... [2024-10-13 13:01:10,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57399870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10, skipping insertion in model container [2024-10-13 13:01:10,276 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:01:10" (1/1) ... [2024-10-13 13:01:10,292 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 13:01:10,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 13:01:10,409 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 13:01:10,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 13:01:10,427 INFO L204 MainTranslator]: Completed translation [2024-10-13 13:01:10,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10 WrapperNode [2024-10-13 13:01:10,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 13:01:10,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 13:01:10,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 13:01:10,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 13:01:10,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10" (1/1) ... [2024-10-13 13:01:10,436 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10" (1/1) ... [2024-10-13 13:01:10,448 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2024-10-13 13:01:10,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 13:01:10,450 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 13:01:10,450 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 13:01:10,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 13:01:10,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10" (1/1) ... [2024-10-13 13:01:10,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10" (1/1) ... [2024-10-13 13:01:10,458 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10" (1/1) ... [2024-10-13 13:01:10,464 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-13 13:01:10,464 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10" (1/1) ... [2024-10-13 13:01:10,464 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10" (1/1) ... [2024-10-13 13:01:10,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10" (1/1) ... [2024-10-13 13:01:10,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10" (1/1) ... [2024-10-13 13:01:10,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10" (1/1) ... [2024-10-13 13:01:10,469 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10" (1/1) ... [2024-10-13 13:01:10,470 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 13:01:10,471 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 13:01:10,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 13:01:10,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 13:01:10,471 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10" (1/1) ... [2024-10-13 13:01:10,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 13:01:10,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 13:01:10,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 13:01:10,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 13:01:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 13:01:10,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 13:01:10,647 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 13:01:10,649 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 13:01:10,715 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-10-13 13:01:10,715 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 13:01:10,738 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 13:01:10,738 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 13:01:10,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:01:10 BoogieIcfgContainer [2024-10-13 13:01:10,739 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 13:01:10,740 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 13:01:10,740 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 13:01:10,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 13:01:10,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:01:10" (1/3) ... [2024-10-13 13:01:10,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e7e994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:01:10, skipping insertion in model container [2024-10-13 13:01:10,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:10" (2/3) ... [2024-10-13 13:01:10,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e7e994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:01:10, skipping insertion in model container [2024-10-13 13:01:10,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:01:10" (3/3) ... [2024-10-13 13:01:10,744 INFO L112 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex3.09.c [2024-10-13 13:01:10,757 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 13:01:10,757 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 13:01:10,805 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 13:01:10,810 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@14172dba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 13:01:10,811 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-13 13:01:10,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 9 states have internal predecessors, (12), 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) [2024-10-13 13:01:10,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-13 13:01:10,818 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 13:01:10,819 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-13 13:01:10,819 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2024-10-13 13:01:10,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 13:01:10,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1854090, now seen corresponding path program 1 times [2024-10-13 13:01:10,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 13:01:10,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827138810] [2024-10-13 13:01:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 13:01:10,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 13:01:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 13:01:10,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 13:01:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 13:01:10,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 13:01:10,918 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 13:01:10,918 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2024-10-13 13:01:10,920 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2024-10-13 13:01:10,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 13:01:10,923 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-13 13:01:10,935 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 13:01:10,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:01:10 BoogieIcfgContainer [2024-10-13 13:01:10,939 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 13:01:10,941 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 13:01:10,941 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 13:01:10,941 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 13:01:10,941 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:01:10" (3/4) ... [2024-10-13 13:01:10,942 INFO L133 WitnessPrinter]: Generating witness for reachability counterexample [2024-10-13 13:01:10,973 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 13:01:10,974 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 13:01:10,975 INFO L158 Benchmark]: Toolchain (without parser) took 705.24ms. Allocated memory is still 174.1MB. Free memory was 105.6MB in the beginning and 122.5MB in the end (delta: -16.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 13:01:10,975 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 100.7MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 13:01:10,976 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.65ms. Allocated memory is still 174.1MB. Free memory was 105.4MB in the beginning and 94.4MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-13 13:01:10,976 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.75ms. Allocated memory is still 174.1MB. Free memory was 94.4MB in the beginning and 93.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 13:01:10,977 INFO L158 Benchmark]: Boogie Preprocessor took 20.46ms. Allocated memory is still 174.1MB. Free memory was 93.1MB in the beginning and 91.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 13:01:10,977 INFO L158 Benchmark]: RCFGBuilder took 268.24ms. Allocated memory is still 174.1MB. Free memory was 91.4MB in the beginning and 138.6MB in the end (delta: -47.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-13 13:01:10,979 INFO L158 Benchmark]: TraceAbstraction took 198.65ms. Allocated memory is still 174.1MB. Free memory was 137.9MB in the beginning and 124.6MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-13 13:01:10,979 INFO L158 Benchmark]: Witness Printer took 33.42ms. Allocated memory is still 174.1MB. Free memory was 124.6MB in the beginning and 122.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 13:01:10,981 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 100.7MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.65ms. Allocated memory is still 174.1MB. Free memory was 105.4MB in the beginning and 94.4MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.75ms. Allocated memory is still 174.1MB. Free memory was 94.4MB in the beginning and 93.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.46ms. Allocated memory is still 174.1MB. Free memory was 93.1MB in the beginning and 91.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 268.24ms. Allocated memory is still 174.1MB. Free memory was 91.4MB in the beginning and 138.6MB in the end (delta: -47.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 198.65ms. Allocated memory is still 174.1MB. Free memory was 137.9MB in the beginning and 124.6MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 33.42ms. Allocated memory is still 174.1MB. Free memory was 124.6MB in the beginning and 122.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 28]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y, z, oldx; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] z = __VERIFIER_nondet_int() [L27] oldx = __VERIFIER_nondet_int() [L28] x > 0 && x < y && x > 2*oldx VAL [oldx=-1073741825, x=1, z=0] [L28] 2*oldx VAL [x=1, z=0] - UnprovableResult [Line: 28]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s 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! [2024-10-13 13:01:11,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)