./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/termination-recursive-malloc/chunk3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/termination-recursive-malloc/chunk3.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 68e751d46a64163dba80e8ae1fa6d1028464a06dc662edff26dd655b7aedca91 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:06:39,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:06:39,682 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-04-29 11:06:39,686 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:06:39,687 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:06:39,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:06:39,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:06:39,708 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:06:39,709 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:06:39,709 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:06:39,710 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:06:39,710 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:06:39,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:06:39,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:06:39,711 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:06:39,711 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:06:39,711 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 11:06:39,711 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:06:39,711 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:06:39,711 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 11:06:39,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:06:39,711 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 11:06:39,711 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:06:39,712 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:06:39,712 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:06:39,712 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:06:39,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:06:39,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:06:39,713 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:06:39,713 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 68e751d46a64163dba80e8ae1fa6d1028464a06dc662edff26dd655b7aedca91 [2025-04-29 11:06:39,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:06:39,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:06:39,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:06:39,956 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:06:39,956 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:06:39,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/termination-recursive-malloc/chunk3.c [2025-04-29 11:06:41,245 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7e7be376/374169c1c31849f6bd2ed9cb7cc8d956/FLAG88747efc7 [2025-04-29 11:06:41,422 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:06:41,424 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/termination-recursive-malloc/chunk3.c [2025-04-29 11:06:41,425 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:06:41,433 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7e7be376/374169c1c31849f6bd2ed9cb7cc8d956/FLAG88747efc7 [2025-04-29 11:06:43,346 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7e7be376/374169c1c31849f6bd2ed9cb7cc8d956 [2025-04-29 11:06:43,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:06:43,349 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:06:43,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:06:43,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:06:43,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:06:43,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,354 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d47e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43, skipping insertion in model container [2025-04-29 11:06:43,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,363 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:06:43,502 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:06:43,509 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:06:43,531 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:06:43,541 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:06:43,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43 WrapperNode [2025-04-29 11:06:43,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:06:43,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:06:43,543 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:06:43,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:06:43,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,551 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,563 INFO L138 Inliner]: procedures = 11, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2025-04-29 11:06:43,563 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:06:43,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:06:43,564 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:06:43,564 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:06:43,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,574 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,583 INFO L175 MemorySlicer]: Split 22 memory accesses to 2 slices as follows [14, 8]. 64 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 11 writes are split as follows [7, 4]. [2025-04-29 11:06:43,583 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,588 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,588 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,591 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:06:43,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:06:43,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:06:43,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:06:43,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43" (1/1) ... [2025-04-29 11:06:43,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:06:43,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:06:43,624 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) [2025-04-29 11:06:43,626 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 [2025-04-29 11:06:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-29 11:06:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-29 11:06:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-04-29 11:06:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-04-29 11:06:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-29 11:06:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2025-04-29 11:06:43,640 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2025-04-29 11:06:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:06:43,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:06:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-29 11:06:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-29 11:06:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-29 11:06:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-04-29 11:06:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-29 11:06:43,704 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:06:43,706 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:06:43,886 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2025-04-29 11:06:43,886 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:06:43,893 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:06:43,893 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:06:43,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:06:43 BoogieIcfgContainer [2025-04-29 11:06:43,894 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:06:43,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:06:43,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:06:43,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:06:43,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:06:43" (1/3) ... [2025-04-29 11:06:43,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258a535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:06:43, skipping insertion in model container [2025-04-29 11:06:43,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:43" (2/3) ... [2025-04-29 11:06:43,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258a535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:06:43, skipping insertion in model container [2025-04-29 11:06:43,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:06:43" (3/3) ... [2025-04-29 11:06:43,901 INFO L128 eAbstractionObserver]: Analyzing ICFG chunk3.c [2025-04-29 11:06:43,911 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:06:43,913 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chunk3.c that has 2 procedures, 18 locations, 22 edges, 1 initial locations, 0 loop locations, and 2 error locations. [2025-04-29 11:06:43,954 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:06:43,964 INFO L340 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;@287b8d83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:06:43,964 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-04-29 11:06:43,968 INFO L278 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-04-29 11:06:43,972 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-04-29 11:06:43,973 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:06:43,973 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:06:43,973 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-29 11:06:43,976 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:06:43,977 INFO L85 PathProgramCache]: Analyzing trace with hash -72887882, now seen corresponding path program 1 times [2025-04-29 11:06:43,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:06:43,982 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373406494] [2025-04-29 11:06:43,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:06:43,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:06:44,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-29 11:06:44,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-29 11:06:44,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:06:44,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:06:44,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:06:44,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:06:44,805 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373406494] [2025-04-29 11:06:44,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373406494] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:06:44,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:06:44,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-29 11:06:44,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862161292] [2025-04-29 11:06:44,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:06:44,809 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-29 11:06:44,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:06:44,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-29 11:06:44,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-29 11:06:44,825 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 6 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:06:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:06:44,983 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2025-04-29 11:06:44,983 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-29 11:06:44,985 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.2) internal successors, (6), 6 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-04-29 11:06:44,985 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:06:44,988 INFO L225 Difference]: With dead ends: 27 [2025-04-29 11:06:44,989 INFO L226 Difference]: Without dead ends: 16 [2025-04-29 11:06:44,991 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-04-29 11:06:44,994 INFO L437 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-29 11:06:44,995 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 53 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-29 11:06:45,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-04-29 11:06:45,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2025-04-29 11:06:45,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:06:45,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2025-04-29 11:06:45,021 INFO L79 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2025-04-29 11:06:45,021 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:06:45,021 INFO L485 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2025-04-29 11:06:45,021 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.2) internal successors, (6), 6 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:06:45,022 INFO L278 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2025-04-29 11:06:45,023 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-29 11:06:45,023 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:06:45,023 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:06:45,023 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:06:45,023 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-29 11:06:45,023 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:06:45,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2035442992, now seen corresponding path program 1 times [2025-04-29 11:06:45,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:06:45,024 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570368854] [2025-04-29 11:06:45,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:06:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:06:45,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-29 11:06:45,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-29 11:06:45,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:06:45,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:06:45,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:06:45,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:06:45,413 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570368854] [2025-04-29 11:06:45,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570368854] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:06:45,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:06:45,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-29 11:06:45,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781571311] [2025-04-29 11:06:45,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:06:45,414 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-29 11:06:45,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:06:45,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-29 11:06:45,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-29 11:06:45,415 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:06:45,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:06:45,513 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2025-04-29 11:06:45,514 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-29 11:06:45,514 INFO L79 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-04-29 11:06:45,514 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:06:45,514 INFO L225 Difference]: With dead ends: 16 [2025-04-29 11:06:45,514 INFO L226 Difference]: Without dead ends: 15 [2025-04-29 11:06:45,514 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-04-29 11:06:45,515 INFO L437 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-29 11:06:45,515 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 29 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-29 11:06:45,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-04-29 11:06:45,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-04-29 11:06:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:06:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2025-04-29 11:06:45,518 INFO L79 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2025-04-29 11:06:45,518 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:06:45,518 INFO L485 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2025-04-29 11:06:45,518 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:06:45,518 INFO L278 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2025-04-29 11:06:45,518 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-29 11:06:45,518 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:06:45,518 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:06:45,519 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:06:45,519 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-29 11:06:45,519 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:06:45,519 INFO L85 PathProgramCache]: Analyzing trace with hash 307610233, now seen corresponding path program 1 times [2025-04-29 11:06:45,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:06:45,519 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227811716] [2025-04-29 11:06:45,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:06:45,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:06:45,541 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-29 11:06:45,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-29 11:06:45,568 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:06:45,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:06:46,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:06:46,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:06:46,439 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227811716] [2025-04-29 11:06:46,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227811716] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:06:46,440 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700883481] [2025-04-29 11:06:46,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:06:46,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:06:46,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:06:46,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-04-29 11:06:46,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-04-29 11:06:46,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-29 11:06:46,545 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-29 11:06:46,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:06:46,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:06:46,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 75 conjuncts are in the unsatisfiable core [2025-04-29 11:06:46,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:06:46,610 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3350 treesize of output 3318 [2025-04-29 11:06:46,674 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 17 [2025-04-29 11:06:46,687 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 1 [2025-04-29 11:06:46,991 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-29 11:06:46,991 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 14 [2025-04-29 11:06:47,005 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 257 treesize of output 143 [2025-04-29 11:06:47,058 INFO L325 Elim1Store]: treesize reduction 43, result has 32.8 percent of original size [2025-04-29 11:06:47,058 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 154 treesize of output 87 [2025-04-29 11:06:47,164 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 101 [2025-04-29 11:06:47,173 INFO L189 IndexEqualityManager]: detected not equals via solver [2025-04-29 11:06:47,176 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 29 [2025-04-29 11:06:47,536 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 123 [2025-04-29 11:06:47,740 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-29 11:06:47,741 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 115 treesize of output 231 [2025-04-29 11:06:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:06:49,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-29 11:06:49,654 INFO L325 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2025-04-29 11:06:49,655 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 173 treesize of output 1 [2025-04-29 11:06:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:06:49,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700883481] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-29 11:06:49,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-29 11:06:49,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 8] total 24 [2025-04-29 11:06:49,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415664012] [2025-04-29 11:06:49,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-29 11:06:49,657 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-04-29 11:06:49,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:06:49,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-04-29 11:06:49,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2025-04-29 11:06:49,658 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:06:54,663 WARN L532 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-04-29 11:06:54,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:06:54,977 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2025-04-29 11:06:54,978 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-04-29 11:06:54,978 INFO L79 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-04-29 11:06:54,978 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:06:54,979 INFO L225 Difference]: With dead ends: 21 [2025-04-29 11:06:54,979 INFO L226 Difference]: Without dead ends: 20 [2025-04-29 11:06:54,979 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=185, Invalid=937, Unknown=0, NotChecked=0, Total=1122 [2025-04-29 11:06:54,980 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 50 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2025-04-29 11:06:54,980 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 37 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 153 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2025-04-29 11:06:54,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-04-29 11:06:54,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14. [2025-04-29 11:06:54,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:06:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2025-04-29 11:06:54,983 INFO L79 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2025-04-29 11:06:54,983 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:06:54,983 INFO L485 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2025-04-29 11:06:54,983 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:06:54,983 INFO L278 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2025-04-29 11:06:54,983 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-29 11:06:54,983 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:06:54,984 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:06:54,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-04-29 11:06:55,186 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:06:55,186 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-29 11:06:55,187 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:06:55,187 INFO L85 PathProgramCache]: Analyzing trace with hash 945982669, now seen corresponding path program 1 times [2025-04-29 11:06:55,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:06:55,187 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678880424] [2025-04-29 11:06:55,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:06:55,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:06:55,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-29 11:06:55,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-29 11:06:55,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:06:55,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:06:55,227 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-29 11:06:55,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-29 11:06:55,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-29 11:06:55,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:06:55,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:06:55,285 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-29 11:06:55,286 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-29 11:06:55,286 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-04-29 11:06:55,287 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-04-29 11:06:55,288 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-29 11:06:55,290 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-04-29 11:06:55,324 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:06:55,327 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:06:55 BoogieIcfgContainer [2025-04-29 11:06:55,328 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:06:55,329 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:06:55,329 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:06:55,329 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:06:55,330 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:06:43" (3/4) ... [2025-04-29 11:06:55,331 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-29 11:06:55,371 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 6. [2025-04-29 11:06:55,413 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:06:55,413 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:06:55,413 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:06:55,414 INFO L158 Benchmark]: Toolchain (without parser) took 12065.01ms. Allocated memory was 142.6MB in the beginning and 503.3MB in the end (delta: 360.7MB). Free memory was 112.9MB in the beginning and 421.8MB in the end (delta: -309.0MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. [2025-04-29 11:06:55,414 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 201.3MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:06:55,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.33ms. Allocated memory is still 142.6MB. Free memory was 112.9MB in the beginning and 99.0MB in the end (delta: 13.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:06:55,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.61ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 97.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:06:55,415 INFO L158 Benchmark]: Boogie Preprocessor took 38.43ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 95.2MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:06:55,416 INFO L158 Benchmark]: RCFGBuilder took 291.83ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 80.5MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:06:55,416 INFO L158 Benchmark]: TraceAbstraction took 11431.87ms. Allocated memory was 142.6MB in the beginning and 503.3MB in the end (delta: 360.7MB). Free memory was 80.0MB in the beginning and 426.0MB in the end (delta: -346.0MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2025-04-29 11:06:55,416 INFO L158 Benchmark]: Witness Printer took 84.64ms. Allocated memory is still 503.3MB. Free memory was 426.0MB in the beginning and 421.8MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:06:55,417 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 201.3MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.33ms. Allocated memory is still 142.6MB. Free memory was 112.9MB in the beginning and 99.0MB in the end (delta: 13.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.61ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 97.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.43ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 95.2MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 291.83ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 80.5MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11431.87ms. Allocated memory was 142.6MB in the beginning and 503.3MB in the end (delta: 360.7MB). Free memory was 80.0MB in the beginning and 426.0MB in the end (delta: -346.0MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * Witness Printer took 84.64ms. Allocated memory is still 503.3MB. Free memory was 426.0MB in the beginning and 421.8MB in the end (delta: 4.2MB). There was no memory consumed. 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: 14]: integer overflow possible integer overflow possible We found a FailurePath: [L29] int **data = malloc(4*sizeof(int*)); [L32] int *p0 = malloc(sizeof(int)); [L33] int *p1 = malloc(sizeof(int)); [L34] int *p2 = malloc(sizeof(int)); [L35] int *p3 = malloc(sizeof(int)); [L38] int i = __VERIFIER_nondet_int(); [L39] int upper = __VERIFIER_nondet_int(); [L41] COND FALSE !(i >= upper) [L44] *p0 = i [L45] *p3 = upper [L49] data[0] = p0 [L50] data[1] = p1 [L51] data[2] = p2 [L52] data[3] = p3 [L56] CALL chunk(data) VAL [\at(data, Pre)={-4:0}] [L6] EXPR data[0] [L6] int *p0 = data[0]; [L7] EXPR data[1] [L7] int *p1 = data[1]; [L8] EXPR data[2] [L8] int *p2 = data[2]; [L9] EXPR data[3] [L9] int *p3 = data[3]; [L11] EXPR \read(*p0) [L11] EXPR \read(*p3) VAL [\at(data, Pre)={-4:0}, data={-4:0}, p0={-3:0}, p2={-5:0}, p3={-1:0}] [L11] COND FALSE !(*p0 >= *p3) [L14] EXPR \read(*p0) [L14] (*p0)++ [L14] (*p0)++ [L16] EXPR \read(*p3) [L16] *p2 = *p3 [L18] data[1] = malloc(sizeof(int*)) [L19] EXPR data[1] [L19] data[2] = data[1] [L20] EXPR data[2] [L20] data[3] = data[2] [L22] CALL chunk(data) VAL [\at(data, Pre)={-4:0}] [L6] EXPR data[0] [L6] int *p0 = data[0]; [L7] EXPR data[1] [L7] int *p1 = data[1]; [L8] EXPR data[2] [L8] int *p2 = data[2]; [L9] EXPR data[3] [L9] int *p3 = data[3]; [L11] EXPR \read(*p0) [L11] EXPR \read(*p3) VAL [\at(data, Pre)={-4:0}, data={-4:0}, p0={-3:0}, p2={-6:0}, p3={-6:0}] [L11] COND FALSE !(*p0 >= *p3) [L14] EXPR \read(*p0) [L14] (*p0)++ VAL [\at(data, Pre)={-4:0}, data={-4:0}, p0={-3:0}, p2={-6:0}, p3={-6:0}] - UnprovableResult [Line: 14]: 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 2 procedures, 18 locations, 22 edges, 2 error locations. Started 1 CEGAR loops. OverallTime: 11.3s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 119 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 250 IncrementalHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 20 mSDtfsCounter, 250 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 46 ConstructedInterpolants, 6 QuantifiedInterpolants, 1490 SizeOfPredicates, 19 NumberOfNonLiveVariables, 283 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 2/9 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, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-04-29 11:06:55,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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)