./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-lit/mine2017-ex4.6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/mine2017-ex4.6.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 32bit --witnessprinter.graph.data.programhash 1fa7c9a8ed8874a508931184bf09b1ee30162cb6ccbf87de6b2ebe54845cfa76 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 09:12:02,868 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 09:12:02,913 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-08 09:12:02,921 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 09:12:02,921 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 09:12:02,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 09:12:02,947 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 09:12:02,947 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 09:12:02,947 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 09:12:02,947 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 09:12:02,948 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 09:12:02,948 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 09:12:02,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 09:12:02,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 09:12:02,949 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 09:12:02,949 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 09:12:02,949 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 09:12:02,949 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 09:12:02,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 09:12:02,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 09:12:02,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 09:12:02,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 09:12:02,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 09:12:02,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 09:12:02,950 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-08 09:12:02,950 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 09:12:02,950 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 09:12:02,950 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 09:12:02,950 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 09:12:02,950 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 09:12:02,950 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 09:12:02,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 09:12:02,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 09:12:02,950 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 09:12:02,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 09:12:02,950 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 09:12:02,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 09:12:02,950 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 09:12:02,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 09:12:02,951 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 09:12:02,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 09:12:02,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 09:12:02,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 09:12:02,951 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 09:12:02,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 09:12:02,951 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-jdk21/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa7c9a8ed8874a508931184bf09b1ee30162cb6ccbf87de6b2ebe54845cfa76 [2025-02-08 09:12:03,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 09:12:03,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 09:12:03,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 09:12:03,191 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 09:12:03,191 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 09:12:03,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/mine2017-ex4.6.i [2025-02-08 09:12:04,313 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e517b3b8e/3ece5b59a0d84c8fb1906292483fb4fa/FLAG7dfba8f09 [2025-02-08 09:12:04,535 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 09:12:04,536 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-lit/mine2017-ex4.6.i [2025-02-08 09:12:04,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e517b3b8e/3ece5b59a0d84c8fb1906292483fb4fa/FLAG7dfba8f09 [2025-02-08 09:12:04,899 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e517b3b8e/3ece5b59a0d84c8fb1906292483fb4fa [2025-02-08 09:12:04,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 09:12:04,902 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 09:12:04,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 09:12:04,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 09:12:04,906 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 09:12:04,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 09:12:04" (1/1) ... [2025-02-08 09:12:04,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9bf72af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:04, skipping insertion in model container [2025-02-08 09:12:04,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 09:12:04" (1/1) ... [2025-02-08 09:12:04,917 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 09:12:05,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 09:12:05,026 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 09:12:05,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 09:12:05,049 INFO L204 MainTranslator]: Completed translation [2025-02-08 09:12:05,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:05 WrapperNode [2025-02-08 09:12:05,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 09:12:05,050 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 09:12:05,050 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 09:12:05,050 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 09:12:05,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:05" (1/1) ... [2025-02-08 09:12:05,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:05" (1/1) ... [2025-02-08 09:12:05,072 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2025-02-08 09:12:05,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 09:12:05,073 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 09:12:05,073 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 09:12:05,073 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 09:12:05,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:05" (1/1) ... [2025-02-08 09:12:05,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:05" (1/1) ... [2025-02-08 09:12:05,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:05" (1/1) ... [2025-02-08 09:12:05,086 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-08 09:12:05,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:05" (1/1) ... [2025-02-08 09:12:05,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:05" (1/1) ... [2025-02-08 09:12:05,089 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:05" (1/1) ... [2025-02-08 09:12:05,090 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:05" (1/1) ... [2025-02-08 09:12:05,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:05" (1/1) ... [2025-02-08 09:12:05,094 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:05" (1/1) ... [2025-02-08 09:12:05,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 09:12:05,095 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 09:12:05,095 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 09:12:05,095 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 09:12:05,096 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:05" (1/1) ... [2025-02-08 09:12:05,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 09:12:05,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:12:05,123 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 09:12:05,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 09:12:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 09:12:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 09:12:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 09:12:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 09:12:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 09:12:05,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 09:12:05,188 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 09:12:05,189 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 09:12:05,259 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-02-08 09:12:05,260 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 09:12:05,270 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 09:12:05,271 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 09:12:05,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 09:12:05 BoogieIcfgContainer [2025-02-08 09:12:05,272 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 09:12:05,274 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 09:12:05,274 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 09:12:05,278 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 09:12:05,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 09:12:04" (1/3) ... [2025-02-08 09:12:05,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a5e1eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 09:12:05, skipping insertion in model container [2025-02-08 09:12:05,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 09:12:05" (2/3) ... [2025-02-08 09:12:05,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a5e1eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 09:12:05, skipping insertion in model container [2025-02-08 09:12:05,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 09:12:05" (3/3) ... [2025-02-08 09:12:05,282 INFO L128 eAbstractionObserver]: Analyzing ICFG mine2017-ex4.6.i [2025-02-08 09:12:05,294 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 09:12:05,295 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mine2017-ex4.6.i that has 2 procedures, 19 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-02-08 09:12:05,338 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 09:12:05,349 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1061e453, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 09:12:05,349 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-08 09:12:05,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 09:12:05,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 09:12:05,355 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:12:05,356 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:12:05,356 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-08 09:12:05,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:12:05,360 INFO L85 PathProgramCache]: Analyzing trace with hash 258614429, now seen corresponding path program 1 times [2025-02-08 09:12:05,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:12:05,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569289024] [2025-02-08 09:12:05,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:12:05,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:12:05,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 09:12:05,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 09:12:05,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:12:05,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:12:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 09:12:05,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:12:05,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569289024] [2025-02-08 09:12:05,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569289024] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 09:12:05,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 09:12:05,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 09:12:05,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981416136] [2025-02-08 09:12:05,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 09:12:05,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 09:12:05,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:12:05,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 09:12:05,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 09:12:05,522 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:12:05,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:12:05,567 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2025-02-08 09:12:05,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 09:12:05,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2025-02-08 09:12:05,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:12:05,574 INFO L225 Difference]: With dead ends: 41 [2025-02-08 09:12:05,574 INFO L226 Difference]: Without dead ends: 18 [2025-02-08 09:12:05,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 09:12:05,581 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:12:05,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 39 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:12:05,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-02-08 09:12:05,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2025-02-08 09:12:05,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 09:12:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2025-02-08 09:12:05,615 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2025-02-08 09:12:05,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:12:05,616 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2025-02-08 09:12:05,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:12:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2025-02-08 09:12:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 09:12:05,623 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:12:05,623 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 09:12:05,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 09:12:05,624 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-08 09:12:05,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:12:05,624 INFO L85 PathProgramCache]: Analyzing trace with hash -572887320, now seen corresponding path program 1 times [2025-02-08 09:12:05,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:12:05,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315405890] [2025-02-08 09:12:05,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:12:05,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:12:05,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 09:12:05,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 09:12:05,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:12:05,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:12:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 09:12:05,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:12:05,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315405890] [2025-02-08 09:12:05,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315405890] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 09:12:05,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 09:12:05,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 09:12:05,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367250957] [2025-02-08 09:12:05,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 09:12:05,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 09:12:05,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:12:05,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 09:12:05,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 09:12:05,693 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:12:05,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:12:05,707 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2025-02-08 09:12:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 09:12:05,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2025-02-08 09:12:05,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:12:05,708 INFO L225 Difference]: With dead ends: 17 [2025-02-08 09:12:05,708 INFO L226 Difference]: Without dead ends: 16 [2025-02-08 09:12:05,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 09:12:05,709 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:12:05,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:12:05,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-02-08 09:12:05,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-02-08 09:12:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 09:12:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2025-02-08 09:12:05,717 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2025-02-08 09:12:05,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:12:05,717 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2025-02-08 09:12:05,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 09:12:05,717 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2025-02-08 09:12:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-08 09:12:05,717 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:12:05,717 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-08 09:12:05,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 09:12:05,718 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-08 09:12:05,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:12:05,718 INFO L85 PathProgramCache]: Analyzing trace with hash 753048549, now seen corresponding path program 1 times [2025-02-08 09:12:05,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:12:05,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961763155] [2025-02-08 09:12:05,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:12:05,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:12:05,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 09:12:05,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 09:12:05,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:12:05,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:12:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 09:12:05,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:12:05,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961763155] [2025-02-08 09:12:05,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961763155] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:12:05,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692882937] [2025-02-08 09:12:05,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 09:12:05,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:12:05,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:12:05,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 09:12:05,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 09:12:05,855 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 09:12:05,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 09:12:05,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 09:12:05,865 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:12:05,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 09:12:05,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:12:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 09:12:05,921 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:12:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 09:12:06,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692882937] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:12:06,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:12:06,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-08 09:12:06,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048753630] [2025-02-08 09:12:06,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:12:06,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 09:12:06,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:12:06,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 09:12:06,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-08 09:12:06,014 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-08 09:12:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:12:06,078 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2025-02-08 09:12:06,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 09:12:06,079 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2025-02-08 09:12:06,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:12:06,080 INFO L225 Difference]: With dead ends: 35 [2025-02-08 09:12:06,080 INFO L226 Difference]: Without dead ends: 34 [2025-02-08 09:12:06,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-08 09:12:06,080 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:12:06,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 37 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:12:06,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-02-08 09:12:06,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2025-02-08 09:12:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-08 09:12:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2025-02-08 09:12:06,091 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 23 [2025-02-08 09:12:06,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:12:06,092 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2025-02-08 09:12:06,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-08 09:12:06,092 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2025-02-08 09:12:06,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-08 09:12:06,094 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:12:06,094 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1] [2025-02-08 09:12:06,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 09:12:06,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:12:06,295 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-08 09:12:06,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:12:06,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1007170115, now seen corresponding path program 2 times [2025-02-08 09:12:06,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:12:06,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647012126] [2025-02-08 09:12:06,296 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:12:06,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:12:06,306 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-02-08 09:12:06,331 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 09:12:06,332 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:12:06,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:12:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2025-02-08 09:12:06,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:12:06,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647012126] [2025-02-08 09:12:06,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647012126] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:12:06,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524926845] [2025-02-08 09:12:06,570 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 09:12:06,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:12:06,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:12:06,572 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 09:12:06,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 09:12:06,598 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-02-08 09:12:06,615 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 09:12:06,616 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 09:12:06,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:12:06,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 09:12:06,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:12:06,687 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2025-02-08 09:12:06,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:12:06,885 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2025-02-08 09:12:06,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524926845] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:12:06,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:12:06,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2025-02-08 09:12:06,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581060354] [2025-02-08 09:12:06,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:12:06,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-08 09:12:06,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:12:06,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-08 09:12:06,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2025-02-08 09:12:06,887 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 22 states have internal predecessors, (43), 10 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 09:12:06,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:12:06,996 INFO L93 Difference]: Finished difference Result 71 states and 96 transitions. [2025-02-08 09:12:06,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 09:12:06,996 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 22 states have internal predecessors, (43), 10 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 65 [2025-02-08 09:12:06,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:12:06,997 INFO L225 Difference]: With dead ends: 71 [2025-02-08 09:12:06,997 INFO L226 Difference]: Without dead ends: 70 [2025-02-08 09:12:06,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2025-02-08 09:12:06,998 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 09:12:06,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 44 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 09:12:06,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-02-08 09:12:07,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2025-02-08 09:12:07,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 47 states have internal predecessors, (48), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-08 09:12:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2025-02-08 09:12:07,007 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 65 [2025-02-08 09:12:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:12:07,008 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2025-02-08 09:12:07,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 22 states have internal predecessors, (43), 10 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-08 09:12:07,008 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2025-02-08 09:12:07,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-02-08 09:12:07,011 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 09:12:07,011 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1] [2025-02-08 09:12:07,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 09:12:07,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:12:07,212 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2025-02-08 09:12:07,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 09:12:07,213 INFO L85 PathProgramCache]: Analyzing trace with hash 691816301, now seen corresponding path program 3 times [2025-02-08 09:12:07,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 09:12:07,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308804623] [2025-02-08 09:12:07,216 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:12:07,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 09:12:07,229 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 149 statements into 16 equivalence classes. [2025-02-08 09:12:07,240 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 29 of 149 statements. [2025-02-08 09:12:07,240 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 09:12:07,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:12:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 97 proven. 3 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2025-02-08 09:12:07,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 09:12:07,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308804623] [2025-02-08 09:12:07,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308804623] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 09:12:07,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287750134] [2025-02-08 09:12:07,310 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 09:12:07,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:12:07,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 09:12:07,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 09:12:07,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 09:12:07,350 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 149 statements into 16 equivalence classes. [2025-02-08 09:12:07,362 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 29 of 149 statements. [2025-02-08 09:12:07,362 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 09:12:07,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 09:12:07,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 09:12:07,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 09:12:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 97 proven. 3 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2025-02-08 09:12:07,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 09:12:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 97 proven. 3 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2025-02-08 09:12:07,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287750134] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 09:12:07,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 09:12:07,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-08 09:12:07,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23368949] [2025-02-08 09:12:07,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 09:12:07,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 09:12:07,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 09:12:07,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 09:12:07,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-08 09:12:07,520 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 09:12:07,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 09:12:07,561 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2025-02-08 09:12:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 09:12:07,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 149 [2025-02-08 09:12:07,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 09:12:07,563 INFO L225 Difference]: With dead ends: 70 [2025-02-08 09:12:07,563 INFO L226 Difference]: Without dead ends: 0 [2025-02-08 09:12:07,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-08 09:12:07,564 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 09:12:07,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 09:12:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-08 09:12:07,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-08 09:12:07,565 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) [2025-02-08 09:12:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-08 09:12:07,565 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 149 [2025-02-08 09:12:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 09:12:07,565 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-08 09:12:07,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-08 09:12:07,565 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-08 09:12:07,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-08 09:12:07,571 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2025-02-08 09:12:07,571 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2025-02-08 09:12:07,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 09:12:07,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 09:12:07,774 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2025-02-08 09:12:07,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-08 09:12:07,857 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 09:12:07,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 09:12:07 BoogieIcfgContainer [2025-02-08 09:12:07,866 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 09:12:07,866 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 09:12:07,866 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 09:12:07,866 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 09:12:07,867 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 09:12:05" (3/4) ... [2025-02-08 09:12:07,868 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 09:12:07,872 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-02-08 09:12:07,874 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-02-08 09:12:07,874 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-08 09:12:07,875 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-08 09:12:07,875 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 09:12:07,922 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 09:12:07,922 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 09:12:07,922 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 09:12:07,923 INFO L158 Benchmark]: Toolchain (without parser) took 3020.89ms. Allocated memory is still 142.6MB. Free memory was 114.9MB in the beginning and 60.5MB in the end (delta: 54.4MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. [2025-02-08 09:12:07,923 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 226.5MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 09:12:07,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 147.02ms. Allocated memory is still 142.6MB. Free memory was 114.9MB in the beginning and 104.8MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 09:12:07,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.86ms. Allocated memory is still 142.6MB. Free memory was 104.3MB in the beginning and 103.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 09:12:07,924 INFO L158 Benchmark]: Boogie Preprocessor took 22.01ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 102.3MB in the end (delta: 990.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 09:12:07,924 INFO L158 Benchmark]: IcfgBuilder took 176.75ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 92.3MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 09:12:07,924 INFO L158 Benchmark]: TraceAbstraction took 2591.92ms. Allocated memory is still 142.6MB. Free memory was 91.6MB in the beginning and 66.1MB in the end (delta: 25.6MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2025-02-08 09:12:07,924 INFO L158 Benchmark]: Witness Printer took 56.07ms. Allocated memory is still 142.6MB. Free memory was 66.1MB in the beginning and 60.5MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 09:12:07,925 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 226.5MB. Free memory is still 147.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 147.02ms. Allocated memory is still 142.6MB. Free memory was 114.9MB in the beginning and 104.8MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.86ms. Allocated memory is still 142.6MB. Free memory was 104.3MB in the beginning and 103.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.01ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 102.3MB in the end (delta: 990.7kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 176.75ms. Allocated memory is still 142.6MB. Free memory was 102.3MB in the beginning and 92.3MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2591.92ms. Allocated memory is still 142.6MB. Free memory was 91.6MB in the beginning and 66.1MB in the end (delta: 25.6MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Witness Printer took 56.07ms. Allocated memory is still 142.6MB. Free memory was 66.1MB in the beginning and 60.5MB 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 - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: 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, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 164 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 118 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 190 IncrementalHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 46 mSDtfsCounter, 190 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 495 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=4, InterpolantAutomatonStates: 47, 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, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 493 NumberOfCodeBlocks, 253 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 719 ConstructedInterpolants, 0 QuantifiedInterpolants, 1102 SizeOfPredicates, 0 NumberOfNonLiveVariables, 256 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 3909/4086 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 - InvariantResult [Line: 16]: Location Invariant Derived location invariant: ((0 <= x) && (x <= 40)) RESULT: Ultimate proved your program to be correct! [2025-02-08 09:12:07,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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