./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/termination-memory-alloca/GulwaniJainKoskinen-2009PLDI-Fig1-alloca.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-memory-alloca/GulwaniJainKoskinen-2009PLDI-Fig1-alloca.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 4d3cf554507947b0b5309e715bb580d9e76ae09bc56a473d10140a3d4f756b80 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:05:24,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:05:24,792 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-04-29 11:05:24,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:05:24,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:05:24,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:05:24,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:05:24,813 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:05:24,813 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:05:24,813 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:05:24,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:05:24,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:05:24,813 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:05:24,813 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:05:24,813 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:05:24,813 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:05:24,813 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 11:05:24,813 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:05:24,814 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:05:24,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:05:24,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:05:24,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:05:24,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:05:24,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:05:24,815 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 11:05:24,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 11:05:24,815 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:05:24,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:05:24,815 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:05:24,815 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:05:24,815 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:05:24,815 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 -> 4d3cf554507947b0b5309e715bb580d9e76ae09bc56a473d10140a3d4f756b80 [2025-04-29 11:05:25,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:05:25,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:05:25,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:05:25,030 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:05:25,032 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:05:25,033 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/termination-memory-alloca/GulwaniJainKoskinen-2009PLDI-Fig1-alloca.c [2025-04-29 11:05:26,396 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed42e108f/bd7a0976f60e4b9faa3d94b2df6c619b/FLAG1824dffbf [2025-04-29 11:05:26,591 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:05:26,591 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/termination-memory-alloca/GulwaniJainKoskinen-2009PLDI-Fig1-alloca.c [2025-04-29 11:05:26,593 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:05:26,593 WARN L117 ultiparseSymbolTable]: System include alloca.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:05:26,615 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed42e108f/bd7a0976f60e4b9faa3d94b2df6c619b/FLAG1824dffbf [2025-04-29 11:05:27,445 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed42e108f/bd7a0976f60e4b9faa3d94b2df6c619b [2025-04-29 11:05:27,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:05:27,448 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:05:27,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:05:27,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:05:27,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:05:27,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,453 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@332fcc5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27, skipping insertion in model container [2025-04-29 11:05:27,454 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,461 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:05:27,616 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:05:27,626 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:05:27,653 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:05:27,664 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:05:27,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27 WrapperNode [2025-04-29 11:05:27,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:05:27,666 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:05:27,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:05:27,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:05:27,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,676 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,691 INFO L138 Inliner]: procedures = 8, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82 [2025-04-29 11:05:27,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:05:27,693 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:05:27,693 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:05:27,693 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:05:27,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,708 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [6, 3, 5]. 43 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0, 0]. The 5 writes are split as follows [3, 1, 1]. [2025-04-29 11:05:27,709 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,709 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,713 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,715 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,716 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,718 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:05:27,719 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:05:27,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:05:27,719 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:05:27,720 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27" (1/1) ... [2025-04-29 11:05:27,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:05:27,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:05:27,746 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 11:05:27,750 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 11:05:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-29 11:05:27,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-04-29 11:05:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-04-29 11:05:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:05:27,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:05:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-29 11:05:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-04-29 11:05:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-04-29 11:05:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-29 11:05:27,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-29 11:05:27,825 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:05:27,826 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:05:27,933 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-04-29 11:05:27,933 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:05:27,941 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:05:27,942 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-04-29 11:05:27,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:05:27 BoogieIcfgContainer [2025-04-29 11:05:27,943 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:05:27,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:05:27,945 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:05:27,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:05:27,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:05:27" (1/3) ... [2025-04-29 11:05:27,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187a48e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:05:27, skipping insertion in model container [2025-04-29 11:05:27,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:05:27" (2/3) ... [2025-04-29 11:05:27,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@187a48e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:05:27, skipping insertion in model container [2025-04-29 11:05:27,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:05:27" (3/3) ... [2025-04-29 11:05:27,953 INFO L128 eAbstractionObserver]: Analyzing ICFG GulwaniJainKoskinen-2009PLDI-Fig1-alloca.c [2025-04-29 11:05:27,968 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:05:27,969 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG GulwaniJainKoskinen-2009PLDI-Fig1-alloca.c that has 1 procedures, 22 locations, 27 edges, 1 initial locations, 1 loop locations, and 4 error locations. [2025-04-29 11:05:28,004 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:05:28,012 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;@3f63dbbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:05:28,012 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-29 11:05:28,015 INFO L278 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.588235294117647) internal successors, (27), 21 states have internal predecessors, (27), 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) [2025-04-29 11:05:28,019 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-04-29 11:05:28,020 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:05:28,020 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-04-29 11:05:28,021 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-04-29 11:05:28,025 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:05:28,026 INFO L85 PathProgramCache]: Analyzing trace with hash 28693891, now seen corresponding path program 1 times [2025-04-29 11:05:28,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:05:28,031 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869496865] [2025-04-29 11:05:28,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:05:28,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:05:28,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-04-29 11:05:28,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-04-29 11:05:28,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:05:28,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:05:28,287 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 11:05:28,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:05:28,287 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869496865] [2025-04-29 11:05:28,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869496865] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:05:28,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:05:28,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 11:05:28,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183950110] [2025-04-29 11:05:28,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:05:28,291 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-04-29 11:05:28,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:05:28,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-04-29 11:05:28,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-04-29 11:05:28,303 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.588235294117647) internal successors, (27), 21 states have internal predecessors, (27), 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) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2025-04-29 11:05:28,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:05:28,344 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2025-04-29 11:05:28,345 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-04-29 11:05:28,346 INFO L79 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) Word has length 5 [2025-04-29 11:05:28,346 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:05:28,349 INFO L225 Difference]: With dead ends: 27 [2025-04-29 11:05:28,349 INFO L226 Difference]: Without dead ends: 16 [2025-04-29 11:05:28,351 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-04-29 11:05:28,353 INFO L437 NwaCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:05:28,353 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 38 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:05:28,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-04-29 11:05:28,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-04-29 11:05:28,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 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) [2025-04-29 11:05:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2025-04-29 11:05:28,372 INFO L79 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 5 [2025-04-29 11:05:28,372 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:05:28,372 INFO L485 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2025-04-29 11:05:28,372 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2025-04-29 11:05:28,372 INFO L278 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2025-04-29 11:05:28,372 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-04-29 11:05:28,372 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:05:28,373 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-04-29 11:05:28,374 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:05:28,374 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-04-29 11:05:28,375 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:05:28,375 INFO L85 PathProgramCache]: Analyzing trace with hash 889510666, now seen corresponding path program 1 times [2025-04-29 11:05:28,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:05:28,375 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170690879] [2025-04-29 11:05:28,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:05:28,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:05:28,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-04-29 11:05:28,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-04-29 11:05:28,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:05:28,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:05:28,578 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 11:05:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:05:28,578 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170690879] [2025-04-29 11:05:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170690879] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:05:28,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:05:28,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 11:05:28,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536575715] [2025-04-29 11:05:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:05:28,579 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-29 11:05:28,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:05:28,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-29 11:05:28,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-29 11:05:28,580 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2025-04-29 11:05:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:05:28,626 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2025-04-29 11:05:28,626 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-29 11:05:28,626 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) Word has length 6 [2025-04-29 11:05:28,626 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:05:28,626 INFO L225 Difference]: With dead ends: 16 [2025-04-29 11:05:28,626 INFO L226 Difference]: Without dead ends: 15 [2025-04-29 11:05:28,626 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-29 11:05:28,627 INFO L437 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:05:28,627 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 25 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:05:28,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-04-29 11:05:28,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-04-29 11:05:28,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-29 11:05:28,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2025-04-29 11:05:28,629 INFO L79 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 6 [2025-04-29 11:05:28,629 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:05:28,630 INFO L485 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2025-04-29 11:05:28,630 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2025-04-29 11:05:28,630 INFO L278 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2025-04-29 11:05:28,630 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-04-29 11:05:28,630 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:05:28,630 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:05:28,630 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:05:28,630 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-04-29 11:05:28,631 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:05:28,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1102547309, now seen corresponding path program 1 times [2025-04-29 11:05:28,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:05:28,631 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168098629] [2025-04-29 11:05:28,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:05:28,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:05:28,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-04-29 11:05:28,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-04-29 11:05:28,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:05:28,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:05:28,753 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 11:05:28,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:05:28,754 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168098629] [2025-04-29 11:05:28,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168098629] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:05:28,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:05:28,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-29 11:05:28,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760059441] [2025-04-29 11:05:28,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:05:28,755 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-29 11:05:28,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:05:28,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-29 11:05:28,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-29 11:05:28,756 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2025-04-29 11:05:28,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:05:28,799 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2025-04-29 11:05:28,800 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-04-29 11:05:28,800 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) Word has length 12 [2025-04-29 11:05:28,800 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:05:28,800 INFO L225 Difference]: With dead ends: 15 [2025-04-29 11:05:28,801 INFO L226 Difference]: Without dead ends: 14 [2025-04-29 11:05:28,801 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-04-29 11:05:28,802 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:05:28,803 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 27 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:05:28,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-04-29 11:05:28,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-04-29 11:05:28,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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) [2025-04-29 11:05:28,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2025-04-29 11:05:28,805 INFO L79 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 12 [2025-04-29 11:05:28,805 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:05:28,805 INFO L485 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2025-04-29 11:05:28,805 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2025-04-29 11:05:28,805 INFO L278 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2025-04-29 11:05:28,805 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-29 11:05:28,805 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:05:28,805 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:05:28,805 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 11:05:28,806 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2025-04-29 11:05:28,806 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:05:28,806 INFO L85 PathProgramCache]: Analyzing trace with hash 180771858, now seen corresponding path program 1 times [2025-04-29 11:05:28,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:05:28,806 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411541475] [2025-04-29 11:05:28,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:05:28,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:05:28,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-29 11:05:28,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-29 11:05:28,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:05:28,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:05:28,825 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-04-29 11:05:28,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-29 11:05:28,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-29 11:05:28,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:05:28,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-04-29 11:05:28,853 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-04-29 11:05:28,853 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-04-29 11:05:28,854 INFO L790 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2025-04-29 11:05:28,855 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2025-04-29 11:05:28,855 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2025-04-29 11:05:28,856 INFO L790 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2025-04-29 11:05:28,856 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-29 11:05:28,858 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-04-29 11:05:28,888 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:05:28,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:05:28 BoogieIcfgContainer [2025-04-29 11:05:28,891 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:05:28,891 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:05:28,891 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:05:28,891 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:05:28,892 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:05:27" (3/4) ... [2025-04-29 11:05:28,893 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-04-29 11:05:28,921 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 4. [2025-04-29 11:05:28,952 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:05:28,952 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:05:28,952 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:05:28,953 INFO L158 Benchmark]: Toolchain (without parser) took 1504.82ms. Allocated memory is still 167.8MB. Free memory was 123.5MB in the beginning and 90.8MB in the end (delta: 32.6MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2025-04-29 11:05:28,953 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:05:28,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.02ms. Allocated memory is still 167.8MB. Free memory was 123.5MB in the beginning and 110.1MB in the end (delta: 13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:05:28,954 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.79ms. Allocated memory is still 167.8MB. Free memory was 110.1MB in the beginning and 108.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:05:28,954 INFO L158 Benchmark]: Boogie Preprocessor took 25.17ms. Allocated memory is still 167.8MB. Free memory was 108.5MB in the beginning and 106.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:05:28,954 INFO L158 Benchmark]: RCFGBuilder took 224.56ms. Allocated memory is still 167.8MB. Free memory was 106.8MB in the beginning and 94.3MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:05:28,956 INFO L158 Benchmark]: TraceAbstraction took 945.71ms. Allocated memory is still 167.8MB. Free memory was 93.4MB in the beginning and 96.4MB in the end (delta: -3.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:05:28,957 INFO L158 Benchmark]: Witness Printer took 61.35ms. Allocated memory is still 167.8MB. Free memory was 96.4MB in the beginning and 90.8MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:05:28,958 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.02ms. Allocated memory is still 167.8MB. Free memory was 123.5MB in the beginning and 110.1MB in the end (delta: 13.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.79ms. Allocated memory is still 167.8MB. Free memory was 110.1MB in the beginning and 108.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.17ms. Allocated memory is still 167.8MB. Free memory was 108.5MB in the beginning and 106.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 224.56ms. Allocated memory is still 167.8MB. Free memory was 106.8MB in the beginning and 94.3MB in the end (delta: 12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 945.71ms. Allocated memory is still 167.8MB. Free memory was 93.4MB in the beginning and 96.4MB in the end (delta: -3.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 61.35ms. Allocated memory is still 167.8MB. Free memory was 96.4MB in the beginning and 90.8MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. 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: 17]: integer overflow possible integer overflow possible We found a FailurePath: [L7] int* id = alloca(sizeof(int)); [L8] int* maxId = alloca(sizeof(int)); [L9] *id = __VERIFIER_nondet_int() [L10] *maxId = __VERIFIER_nondet_int() [L12] EXPR \read(*id) [L12] 0 <= *id && *id < *maxId VAL [id={3:0}, maxId={5:0}] [L12] 0 <= *id && *id < *maxId [L12] EXPR \read(*id) [L12] EXPR \read(*maxId) [L12] 0 <= *id && *id < *maxId VAL [id={3:0}, maxId={5:0}] [L12] COND TRUE 0 <= *id && *id < *maxId [L13] int* tmp = alloca(sizeof(int)); [L14] EXPR \read(*id) [L14] EXPR *id + 1 [L14] *tmp = *id + 1 [L15] EXPR \read(*tmp) [L15] EXPR \read(*id) [L15] *tmp != *id && __VERIFIER_nondet_int() [L15] *tmp != *id && __VERIFIER_nondet_int() VAL [id={3:0}, maxId={5:0}, tmp={2:0}] [L15] COND TRUE *tmp != *id && __VERIFIER_nondet_int() [L16] EXPR \read(*tmp) [L16] EXPR \read(*maxId) [L16] COND TRUE *tmp <= *maxId [L17] EXPR \read(*tmp) [L17] *tmp + 1 VAL [id={3:0}, maxId={5:0}, tmp={2:0}] - UnprovableResult [Line: 14]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 14]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 17]: 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, 22 locations, 27 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 55 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 40 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 107 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-04-29 11:05:28,974 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)