./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/termination-recursive-malloc/chunk1-2.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/chunk1-2.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 e67b05729c3772549e338e04bb81c47c4928bfe939015878c78d1df5a6e72860 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 11:06:37,828 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 11:06:37,878 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2025-04-29 11:06:37,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 11:06:37,883 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 11:06:37,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 11:06:37,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 11:06:37,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 11:06:37,907 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 11:06:37,907 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 11:06:37,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 11:06:37,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 11:06:37,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 11:06:37,907 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 11:06:37,907 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 11:06:37,909 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 11:06:37,909 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 11:06:37,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 11:06:37,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 11:06:37,910 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 11:06:37,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 11:06:37,910 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 11:06:37,910 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-04-29 11:06:37,910 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-29 11:06:37,910 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 11:06:37,910 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 11:06:37,910 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 11:06:37,910 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 11:06:37,911 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:06:37,911 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:06:37,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:06:37,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:06:37,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 11:06:37,911 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 11:06:37,911 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 11:06:37,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 11:06:37,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:06:37,912 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 11:06:37,912 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 11:06:37,912 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 11:06:37,912 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 11:06:37,912 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 11:06:37,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 11:06:37,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 11:06:37,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 11:06:37,912 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 11:06:37,913 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 -> e67b05729c3772549e338e04bb81c47c4928bfe939015878c78d1df5a6e72860 [2025-04-29 11:06:38,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 11:06:38,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 11:06:38,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 11:06:38,134 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 11:06:38,135 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 11:06:38,135 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/termination-recursive-malloc/chunk1-2.c [2025-04-29 11:06:39,366 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12608a9c3/f9c73e6e7a2447389ccbbcbb7d1f4d00/FLAGca960ea60 [2025-04-29 11:06:39,601 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 11:06:39,602 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/termination-recursive-malloc/chunk1-2.c [2025-04-29 11:06:39,603 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 11:06:39,607 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12608a9c3/f9c73e6e7a2447389ccbbcbb7d1f4d00/FLAGca960ea60 [2025-04-29 11:06:40,417 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12608a9c3/f9c73e6e7a2447389ccbbcbb7d1f4d00 [2025-04-29 11:06:40,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 11:06:40,420 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 11:06:40,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 11:06:40,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 11:06:40,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 11:06:40,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b4f5fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40, skipping insertion in model container [2025-04-29 11:06:40,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,436 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 11:06:40,577 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:06:40,582 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 11:06:40,600 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 11:06:40,610 INFO L204 MainTranslator]: Completed translation [2025-04-29 11:06:40,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40 WrapperNode [2025-04-29 11:06:40,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 11:06:40,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 11:06:40,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 11:06:40,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 11:06:40,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,633 INFO L138 Inliner]: procedures = 9, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2025-04-29 11:06:40,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 11:06:40,635 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 11:06:40,635 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 11:06:40,635 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 11:06:40,641 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,647 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,658 INFO L175 MemorySlicer]: Split 6 memory accesses to 1 slices as follows [6]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2025-04-29 11:06:40,659 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,659 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,662 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 11:06:40,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 11:06:40,674 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 11:06:40,674 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 11:06:40,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40" (1/1) ... [2025-04-29 11:06:40,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 11:06:40,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:06:40,701 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 11:06:40,706 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 11:06:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-04-29 11:06:40,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-29 11:06:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure chunk [2025-04-29 11:06:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure chunk [2025-04-29 11:06:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 11:06:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 11:06:40,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-04-29 11:06:40,767 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 11:06:40,770 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 11:06:40,855 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-04-29 11:06:40,855 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 11:06:40,861 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 11:06:40,862 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 11:06:40,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:06:40 BoogieIcfgContainer [2025-04-29 11:06:40,863 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 11:06:40,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 11:06:40,865 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 11:06:40,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 11:06:40,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 11:06:40" (1/3) ... [2025-04-29 11:06:40,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4184a349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:06:40, skipping insertion in model container [2025-04-29 11:06:40,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 11:06:40" (2/3) ... [2025-04-29 11:06:40,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4184a349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 11:06:40, skipping insertion in model container [2025-04-29 11:06:40,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:06:40" (3/3) ... [2025-04-29 11:06:40,871 INFO L128 eAbstractionObserver]: Analyzing ICFG chunk1-2.c [2025-04-29 11:06:40,881 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 11:06:40,883 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chunk1-2.c that has 2 procedures, 16 locations, 20 edges, 1 initial locations, 0 loop locations, and 2 error locations. [2025-04-29 11:06:40,925 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 11:06:40,932 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;@f52cc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 11:06:40,932 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-04-29 11:06:40,935 INFO L278 IsEmpty]: Start isEmpty. Operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 14 states have internal predecessors, (14), 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 11:06:40,938 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-04-29 11:06:40,938 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:06:40,939 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:06:40,939 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-29 11:06:40,942 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:06:40,942 INFO L85 PathProgramCache]: Analyzing trace with hash -990003817, now seen corresponding path program 1 times [2025-04-29 11:06:40,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:06:40,947 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265854691] [2025-04-29 11:06:40,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:06:40,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:06:41,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-04-29 11:06:41,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-04-29 11:06:41,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:06:41,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:06:41,326 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 11:06:41,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:06:41,327 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265854691] [2025-04-29 11:06:41,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265854691] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:06:41,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:06:41,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-29 11:06:41,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117235233] [2025-04-29 11:06:41,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:06:41,332 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-29 11:06:41,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:06:41,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-29 11:06:41,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-29 11:06:41,347 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 14 states have internal predecessors, (14), 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 11:06:41,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:06:41,466 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2025-04-29 11:06:41,469 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-04-29 11:06:41,470 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 11:06:41,471 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:06:41,475 INFO L225 Difference]: With dead ends: 21 [2025-04-29 11:06:41,475 INFO L226 Difference]: Without dead ends: 10 [2025-04-29 11:06:41,477 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-04-29 11:06:41,480 INFO L437 NwaCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-29 11:06:41,481 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 38 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-29 11:06:41,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2025-04-29 11:06:41,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2025-04-29 11:06:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 8 states have internal predecessors, (8), 2 states have call successors, (2), 1 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 11:06:41,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2025-04-29 11:06:41,509 INFO L79 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2025-04-29 11:06:41,509 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:06:41,510 INFO L485 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2025-04-29 11:06:41,510 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 11:06:41,510 INFO L278 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2025-04-29 11:06:41,510 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-04-29 11:06:41,510 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:06:41,510 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:06:41,510 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 11:06:41,510 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-29 11:06:41,511 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:06:41,511 INFO L85 PathProgramCache]: Analyzing trace with hash -625347217, now seen corresponding path program 1 times [2025-04-29 11:06:41,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:06:41,511 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506989544] [2025-04-29 11:06:41,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:06:41,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:06:41,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-04-29 11:06:41,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-04-29 11:06:41,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:06:41,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:06:41,672 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 11:06:41,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:06:41,672 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506989544] [2025-04-29 11:06:41,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506989544] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 11:06:41,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 11:06:41,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-29 11:06:41,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325590646] [2025-04-29 11:06:41,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 11:06:41,674 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-04-29 11:06:41,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:06:41,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-04-29 11:06:41,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-04-29 11:06:41,674 INFO L87 Difference]: Start difference. First operand 10 states and 10 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 11:06:41,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:06:41,730 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2025-04-29 11:06:41,731 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-29 11:06:41,731 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 11:06:41,731 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:06:41,731 INFO L225 Difference]: With dead ends: 15 [2025-04-29 11:06:41,731 INFO L226 Difference]: Without dead ends: 14 [2025-04-29 11:06:41,732 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-04-29 11:06:41,732 INFO L437 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-29 11:06:41,732 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 25 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-29 11:06:41,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-04-29 11:06:41,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-04-29 11:06:41,738 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 11:06:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2025-04-29 11:06:41,739 INFO L79 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2025-04-29 11:06:41,739 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:06:41,739 INFO L485 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2025-04-29 11:06:41,739 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 11:06:41,740 INFO L278 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2025-04-29 11:06:41,740 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-04-29 11:06:41,740 INFO L210 NwaCegarLoop]: Found error trace [2025-04-29 11:06:41,740 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 11:06:41,740 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 11:06:41,741 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-04-29 11:06:41,741 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 11:06:41,741 INFO L85 PathProgramCache]: Analyzing trace with hash -996533012, now seen corresponding path program 1 times [2025-04-29 11:06:41,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 11:06:41,742 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768264674] [2025-04-29 11:06:41,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:06:41,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 11:06:41,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-29 11:06:41,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-29 11:06:41,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:06:41,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:06:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:06:42,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 11:06:42,204 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768264674] [2025-04-29 11:06:42,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768264674] provided 0 perfect and 1 imperfect interpolant sequences [2025-04-29 11:06:42,204 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111999685] [2025-04-29 11:06:42,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 11:06:42,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-04-29 11:06:42,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 11:06:42,208 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 11:06:42,209 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 11:06:42,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-04-29 11:06:42,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-04-29 11:06:42,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 11:06:42,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 11:06:42,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-04-29 11:06:42,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-04-29 11:06:42,313 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 1 [2025-04-29 11:06:42,368 INFO L354 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 25 treesize of output 13 [2025-04-29 11:06:42,418 INFO L325 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-04-29 11:06:42,418 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 32 treesize of output 12 [2025-04-29 11:06:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-04-29 11:06:42,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-04-29 11:06:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 11:06:42,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111999685] provided 0 perfect and 2 imperfect interpolant sequences [2025-04-29 11:06:42,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-04-29 11:06:42,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 9] total 18 [2025-04-29 11:06:42,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677682458] [2025-04-29 11:06:42,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-04-29 11:06:42,577 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-04-29 11:06:42,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 11:06:42,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-04-29 11:06:42,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2025-04-29 11:06:42,578 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 19 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (5), 4 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 11:06:42,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-29 11:06:42,913 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2025-04-29 11:06:42,913 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-04-29 11:06:42,914 INFO L79 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (5), 4 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 13 [2025-04-29 11:06:42,914 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-29 11:06:42,914 INFO L225 Difference]: With dead ends: 19 [2025-04-29 11:06:42,914 INFO L226 Difference]: Without dead ends: 0 [2025-04-29 11:06:42,915 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2025-04-29 11:06:42,915 INFO L437 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-29 11:06:42,915 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 25 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-29 11:06:42,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-29 11:06:42,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-29 11:06:42,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 11:06:42,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-29 11:06:42,918 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2025-04-29 11:06:42,918 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-29 11:06:42,918 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-29 11:06:42,918 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (5), 4 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 11:06:42,918 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-29 11:06:42,918 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-29 11:06:42,920 INFO L790 garLoopResultBuilder]: Registering result SAFE for location chunkErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-04-29 11:06:42,920 INFO L790 garLoopResultBuilder]: Registering result SAFE for location chunkErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-04-29 11:06:42,927 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 11:06:43,120 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 11:06:43,123 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-04-29 11:06:43,124 INFO L312 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-04-29 11:06:43,350 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 11:06:43,353 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 11:06:43 BoogieIcfgContainer [2025-04-29 11:06:43,353 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 11:06:43,354 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 11:06:43,354 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 11:06:43,354 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 11:06:43,355 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 11:06:40" (3/4) ... [2025-04-29 11:06:43,356 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-29 11:06:43,359 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure chunk [2025-04-29 11:06:43,361 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-04-29 11:06:43,361 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-04-29 11:06:43,361 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-04-29 11:06:43,361 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-04-29 11:06:43,405 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 11:06:43,406 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 11:06:43,406 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 11:06:43,406 INFO L158 Benchmark]: Toolchain (without parser) took 2986.52ms. Allocated memory is still 142.6MB. Free memory was 112.1MB in the beginning and 50.2MB in the end (delta: 61.9MB). Peak memory consumption was 60.6MB. Max. memory is 16.1GB. [2025-04-29 11:06:43,406 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:06:43,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.41ms. Allocated memory is still 142.6MB. Free memory was 112.1MB in the beginning and 98.7MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 11:06:43,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.73ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 97.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:06:43,407 INFO L158 Benchmark]: Boogie Preprocessor took 38.39ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 96.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 11:06:43,407 INFO L158 Benchmark]: RCFGBuilder took 189.39ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 85.5MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:06:43,407 INFO L158 Benchmark]: TraceAbstraction took 2488.62ms. Allocated memory is still 142.6MB. Free memory was 84.6MB in the beginning and 55.4MB in the end (delta: 29.2MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2025-04-29 11:06:43,408 INFO L158 Benchmark]: Witness Printer took 51.73ms. Allocated memory is still 142.6MB. Free memory was 55.4MB in the beginning and 50.2MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 11:06:43,408 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.41ms. Allocated memory is still 142.6MB. Free memory was 112.1MB in the beginning and 98.7MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.73ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 97.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.39ms. Allocated memory is still 142.6MB. Free memory was 97.4MB in the beginning and 96.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 189.39ms. Allocated memory is still 142.6MB. Free memory was 96.0MB in the beginning and 85.5MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2488.62ms. Allocated memory is still 142.6MB. Free memory was 84.6MB in the beginning and 55.4MB in the end (delta: 29.2MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. * Witness Printer took 51.73ms. Allocated memory is still 142.6MB. Free memory was 55.4MB in the beginning and 50.2MB in the end (delta: 5.2MB). 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 - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 20 edges, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 157 IncrementalHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 18 mSDtfsCounter, 157 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 30, 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, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 471 SizeOfPredicates, 9 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 2/12 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-29 11:06:43,420 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 Result: TRUE