./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/nla-digbench-scaling/bresenham-ll_valuebound20.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cb384ff5c9201b9f90543357d3375f0a0ac9cc5fac01729f538d89799a1d7226 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 20:27:06,746 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 20:27:06,802 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 20:27:06,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 20:27:06,808 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 20:27:06,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 20:27:06,829 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 20:27:06,829 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 20:27:06,830 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 20:27:06,830 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 20:27:06,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 20:27:06,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 20:27:06,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 20:27:06,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 20:27:06,830 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 20:27:06,831 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 20:27:06,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 20:27:06,831 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 20:27:06,831 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 20:27:06,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 20:27:06,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 20:27:06,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 20:27:06,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 20:27:06,831 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 20:27:06,831 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 20:27:06,831 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 20:27:06,832 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 20:27:06,832 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 20:27:06,832 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 20:27:06,832 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 20:27:06,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 20:27:06,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 20:27:06,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:27:06,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 20:27:06,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 20:27:06,832 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 20:27:06,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 20:27:06,833 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 20:27:06,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 20:27:06,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 20:27:06,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 20:27:06,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 20:27:06,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 20:27:06,833 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 ! call(reach_error())) ) 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 -> cb384ff5c9201b9f90543357d3375f0a0ac9cc5fac01729f538d89799a1d7226 [2025-02-07 20:27:07,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 20:27:07,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 20:27:07,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 20:27:07,060 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 20:27:07,061 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 20:27:07,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound20.c [2025-02-07 20:27:08,296 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6bb5bd8d0/f19c4836cc2343bebdf05eb46836a8cd/FLAG64c7c4270 [2025-02-07 20:27:08,525 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 20:27:08,526 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound20.c [2025-02-07 20:27:08,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6bb5bd8d0/f19c4836cc2343bebdf05eb46836a8cd/FLAG64c7c4270 [2025-02-07 20:27:08,846 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6bb5bd8d0/f19c4836cc2343bebdf05eb46836a8cd [2025-02-07 20:27:08,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 20:27:08,850 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 20:27:08,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 20:27:08,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 20:27:08,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 20:27:08,860 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:27:08" (1/1) ... [2025-02-07 20:27:08,861 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb92a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:08, skipping insertion in model container [2025-02-07 20:27:08,861 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:27:08" (1/1) ... [2025-02-07 20:27:08,878 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 20:27:08,979 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound20.c[597,610] [2025-02-07 20:27:08,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:27:08,996 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 20:27:09,003 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound20.c[597,610] [2025-02-07 20:27:09,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:27:09,016 INFO L204 MainTranslator]: Completed translation [2025-02-07 20:27:09,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:09 WrapperNode [2025-02-07 20:27:09,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 20:27:09,018 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 20:27:09,018 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 20:27:09,018 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 20:27:09,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:09" (1/1) ... [2025-02-07 20:27:09,025 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:09" (1/1) ... [2025-02-07 20:27:09,033 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2025-02-07 20:27:09,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 20:27:09,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 20:27:09,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 20:27:09,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 20:27:09,040 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:09" (1/1) ... [2025-02-07 20:27:09,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:09" (1/1) ... [2025-02-07 20:27:09,041 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:09" (1/1) ... [2025-02-07 20:27:09,050 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]. [2025-02-07 20:27:09,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:09" (1/1) ... [2025-02-07 20:27:09,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:09" (1/1) ... [2025-02-07 20:27:09,052 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:09" (1/1) ... [2025-02-07 20:27:09,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:09" (1/1) ... [2025-02-07 20:27:09,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:09" (1/1) ... [2025-02-07 20:27:09,053 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:09" (1/1) ... [2025-02-07 20:27:09,053 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 20:27:09,054 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 20:27:09,054 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 20:27:09,054 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 20:27:09,057 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:09" (1/1) ... [2025-02-07 20:27:09,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:27:09,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:27:09,083 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) [2025-02-07 20:27:09,087 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 [2025-02-07 20:27:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 20:27:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-07 20:27:09,101 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-07 20:27:09,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 20:27:09,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 20:27:09,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 20:27:09,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-07 20:27:09,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-07 20:27:09,135 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 20:27:09,136 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 20:27:09,222 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-02-07 20:27:09,223 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 20:27:09,230 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 20:27:09,231 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 20:27:09,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:27:09 BoogieIcfgContainer [2025-02-07 20:27:09,231 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 20:27:09,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 20:27:09,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 20:27:09,237 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 20:27:09,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 08:27:08" (1/3) ... [2025-02-07 20:27:09,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c28b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:27:09, skipping insertion in model container [2025-02-07 20:27:09,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:27:09" (2/3) ... [2025-02-07 20:27:09,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c28b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:27:09, skipping insertion in model container [2025-02-07 20:27:09,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:27:09" (3/3) ... [2025-02-07 20:27:09,239 INFO L128 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound20.c [2025-02-07 20:27:09,252 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 20:27:09,253 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bresenham-ll_valuebound20.c that has 3 procedures, 25 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-07 20:27:09,289 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 20:27:09,297 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;@3e20f78a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 20:27:09,297 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 20:27:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-07 20:27:09,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-07 20:27:09,303 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:27:09,303 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:27:09,304 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:27:09,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:27:09,307 INFO L85 PathProgramCache]: Analyzing trace with hash -207434220, now seen corresponding path program 1 times [2025-02-07 20:27:09,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:27:09,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817683713] [2025-02-07 20:27:09,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:27:09,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:27:09,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-07 20:27:09,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-07 20:27:09,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:27:09,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:27:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:27:09,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:27:09,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817683713] [2025-02-07 20:27:09,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817683713] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:27:09,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787287117] [2025-02-07 20:27:09,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:27:09,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:27:09,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:27:09,439 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) [2025-02-07 20:27:09,440 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 [2025-02-07 20:27:09,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-07 20:27:09,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-07 20:27:09,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:27:09,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:27:09,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-07 20:27:09,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:27:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:27:09,511 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:27:09,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787287117] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:27:09,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 20:27:09,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-07 20:27:09,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177592255] [2025-02-07 20:27:09,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:27:09,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 20:27:09,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:27:09,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 20:27:09,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 20:27:09,528 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 20:27:09,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:27:09,537 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2025-02-07 20:27:09,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 20:27:09,538 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2025-02-07 20:27:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:27:09,542 INFO L225 Difference]: With dead ends: 48 [2025-02-07 20:27:09,542 INFO L226 Difference]: Without dead ends: 22 [2025-02-07 20:27:09,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 20:27:09,545 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:27:09,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:27:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-07 20:27:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-02-07 20:27:09,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 20:27:09,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-02-07 20:27:09,564 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 18 [2025-02-07 20:27:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:27:09,565 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-02-07 20:27:09,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 20:27:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-02-07 20:27:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-07 20:27:09,566 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:27:09,566 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:27:09,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 20:27:09,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-07 20:27:09,768 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:27:09,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:27:09,769 INFO L85 PathProgramCache]: Analyzing trace with hash -507336874, now seen corresponding path program 1 times [2025-02-07 20:27:09,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:27:09,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608195178] [2025-02-07 20:27:09,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:27:09,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:27:09,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-07 20:27:09,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-07 20:27:09,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:27:09,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:27:09,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425941754] [2025-02-07 20:27:09,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:27:09,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:27:09,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:27:09,848 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) [2025-02-07 20:27:09,850 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 [2025-02-07 20:27:09,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-07 20:27:09,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-07 20:27:09,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:27:09,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:27:09,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-07 20:27:09,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:27:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 20:27:10,000 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:27:10,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:27:10,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608195178] [2025-02-07 20:27:10,000 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:27:10,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425941754] [2025-02-07 20:27:10,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425941754] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:27:10,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:27:10,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-07 20:27:10,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212274275] [2025-02-07 20:27:10,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:27:10,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 20:27:10,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:27:10,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 20:27:10,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:27:10,003 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-07 20:27:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:27:10,076 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2025-02-07 20:27:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-07 20:27:10,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2025-02-07 20:27:10,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:27:10,078 INFO L225 Difference]: With dead ends: 34 [2025-02-07 20:27:10,078 INFO L226 Difference]: Without dead ends: 32 [2025-02-07 20:27:10,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-07 20:27:10,078 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:27:10,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 73 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:27:10,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-07 20:27:10,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2025-02-07 20:27:10,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-07 20:27:10,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2025-02-07 20:27:10,083 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2025-02-07 20:27:10,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:27:10,083 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2025-02-07 20:27:10,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-07 20:27:10,084 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2025-02-07 20:27:10,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-07 20:27:10,084 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:27:10,084 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:27:10,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-07 20:27:10,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:27:10,289 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:27:10,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:27:10,289 INFO L85 PathProgramCache]: Analyzing trace with hash 991070590, now seen corresponding path program 1 times [2025-02-07 20:27:10,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:27:10,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080123215] [2025-02-07 20:27:10,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:27:10,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:27:10,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-07 20:27:10,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-07 20:27:10,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:27:10,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:27:10,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:27:10,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:27:10,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080123215] [2025-02-07 20:27:10,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080123215] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:27:10,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141369101] [2025-02-07 20:27:10,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:27:10,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:27:10,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:27:10,497 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) [2025-02-07 20:27:10,499 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 [2025-02-07 20:27:10,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-07 20:27:10,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-07 20:27:10,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:27:10,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:27:10,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-07 20:27:10,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:27:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 20:27:10,638 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:27:10,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141369101] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:27:10,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 20:27:10,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-02-07 20:27:10,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418230253] [2025-02-07 20:27:10,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:27:10,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 20:27:10,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:27:10,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 20:27:10,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-07 20:27:10,641 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 20:27:10,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:27:10,706 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2025-02-07 20:27:10,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-07 20:27:10,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2025-02-07 20:27:10,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:27:10,707 INFO L225 Difference]: With dead ends: 38 [2025-02-07 20:27:10,707 INFO L226 Difference]: Without dead ends: 30 [2025-02-07 20:27:10,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-07 20:27:10,708 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:27:10,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 73 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:27:10,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-02-07 20:27:10,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2025-02-07 20:27:10,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-07 20:27:10,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2025-02-07 20:27:10,711 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 25 [2025-02-07 20:27:10,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:27:10,711 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2025-02-07 20:27:10,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 20:27:10,712 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2025-02-07 20:27:10,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-07 20:27:10,712 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:27:10,712 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:27:10,718 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 [2025-02-07 20:27:10,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:27:10,913 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:27:10,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:27:10,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1752221379, now seen corresponding path program 1 times [2025-02-07 20:27:10,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:27:10,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732917782] [2025-02-07 20:27:10,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:27:10,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:27:10,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-07 20:27:10,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-07 20:27:10,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:27:10,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:27:10,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594459622] [2025-02-07 20:27:10,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:27:10,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:27:10,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:27:10,930 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:27:10,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-07 20:27:10,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-07 20:27:10,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-07 20:27:10,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:27:10,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:27:10,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-07 20:27:10,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:27:11,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 20:27:11,098 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:27:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 20:27:11,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:27:11,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732917782] [2025-02-07 20:27:11,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:27:11,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594459622] [2025-02-07 20:27:11,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594459622] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:27:11,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-07 20:27:11,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2025-02-07 20:27:11,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603512431] [2025-02-07 20:27:11,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-07 20:27:11,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-07 20:27:11,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:27:11,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-07 20:27:11,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2025-02-07 20:27:11,248 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 16 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-07 20:27:11,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:27:11,459 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2025-02-07 20:27:11,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-07 20:27:11,460 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 16 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 27 [2025-02-07 20:27:11,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:27:11,460 INFO L225 Difference]: With dead ends: 44 [2025-02-07 20:27:11,460 INFO L226 Difference]: Without dead ends: 40 [2025-02-07 20:27:11,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2025-02-07 20:27:11,461 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:27:11,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 132 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:27:11,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-02-07 20:27:11,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2025-02-07 20:27:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-07 20:27:11,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2025-02-07 20:27:11,466 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 27 [2025-02-07 20:27:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:27:11,466 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2025-02-07 20:27:11,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 16 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-07 20:27:11,466 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2025-02-07 20:27:11,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-07 20:27:11,466 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:27:11,466 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:27:11,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-07 20:27:11,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:27:11,667 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:27:11,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:27:11,668 INFO L85 PathProgramCache]: Analyzing trace with hash -202136207, now seen corresponding path program 1 times [2025-02-07 20:27:11,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:27:11,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756146800] [2025-02-07 20:27:11,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:27:11,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:27:11,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-07 20:27:11,694 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-07 20:27:11,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:27:11,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:27:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-07 20:27:11,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:27:11,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756146800] [2025-02-07 20:27:11,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756146800] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:27:11,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448564009] [2025-02-07 20:27:11,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:27:11,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:27:11,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:27:11,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 20:27:11,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-07 20:27:11,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-07 20:27:11,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-07 20:27:11,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:27:11,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:27:11,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-07 20:27:11,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:27:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:27:12,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:27:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-07 20:27:12,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448564009] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:27:12,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:27:12,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 11] total 27 [2025-02-07 20:27:12,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183603637] [2025-02-07 20:27:12,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:27:12,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-07 20:27:12,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:27:12,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-07 20:27:12,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=603, Unknown=0, NotChecked=0, Total=702 [2025-02-07 20:27:12,594 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 27 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2025-02-07 20:27:13,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:27:13,350 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2025-02-07 20:27:13,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-07 20:27:13,350 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 34 [2025-02-07 20:27:13,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:27:13,350 INFO L225 Difference]: With dead ends: 47 [2025-02-07 20:27:13,351 INFO L226 Difference]: Without dead ends: 0 [2025-02-07 20:27:13,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=386, Invalid=1684, Unknown=0, NotChecked=0, Total=2070 [2025-02-07 20:27:13,352 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 67 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 20:27:13,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 138 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 20:27:13,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-07 20:27:13,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-07 20:27:13,353 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) [2025-02-07 20:27:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-07 20:27:13,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2025-02-07 20:27:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:27:13,353 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-07 20:27:13,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 10 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2025-02-07 20:27:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-07 20:27:13,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-07 20:27:13,356 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-07 20:27:13,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-07 20:27:13,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:27:13,562 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-02-07 20:27:13,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-07 20:27:13,779 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 20:27:13,791 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2025-02-07 20:27:13,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 08:27:13 BoogieIcfgContainer [2025-02-07 20:27:13,794 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 20:27:13,795 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 20:27:13,795 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 20:27:13,795 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 20:27:13,795 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:27:09" (3/4) ... [2025-02-07 20:27:13,796 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-07 20:27:13,800 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-02-07 20:27:13,800 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-02-07 20:27:13,802 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-02-07 20:27:13,802 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-07 20:27:13,803 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-07 20:27:13,803 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-07 20:27:13,872 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-07 20:27:13,872 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-07 20:27:13,872 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 20:27:13,873 INFO L158 Benchmark]: Toolchain (without parser) took 5023.29ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 110.6MB in the end (delta: 11.7MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2025-02-07 20:27:13,873 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:27:13,873 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.04ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 111.2MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 20:27:13,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.67ms. Allocated memory is still 167.8MB. Free memory was 111.2MB in the beginning and 109.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:27:13,874 INFO L158 Benchmark]: Boogie Preprocessor took 19.89ms. Allocated memory is still 167.8MB. Free memory was 109.9MB in the beginning and 108.5MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 20:27:13,874 INFO L158 Benchmark]: IcfgBuilder took 177.37ms. Allocated memory is still 167.8MB. Free memory was 108.5MB in the beginning and 96.4MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 20:27:13,874 INFO L158 Benchmark]: TraceAbstraction took 4561.27ms. Allocated memory is still 167.8MB. Free memory was 95.7MB in the beginning and 116.7MB in the end (delta: -21.0MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. [2025-02-07 20:27:13,874 INFO L158 Benchmark]: Witness Printer took 77.82ms. Allocated memory is still 167.8MB. Free memory was 116.7MB in the beginning and 110.6MB in the end (delta: 6.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:27:13,875 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 162.04ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 111.2MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.67ms. Allocated memory is still 167.8MB. Free memory was 111.2MB in the beginning and 109.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.89ms. Allocated memory is still 167.8MB. Free memory was 109.9MB in the beginning and 108.5MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 177.37ms. Allocated memory is still 167.8MB. Free memory was 108.5MB in the beginning and 96.4MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4561.27ms. Allocated memory is still 167.8MB. Free memory was 95.7MB in the beginning and 116.7MB in the end (delta: -21.0MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. * Witness Printer took 77.82ms. Allocated memory is still 167.8MB. Free memory was 116.7MB in the beginning and 110.6MB in the end (delta: 6.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 16]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 96 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 444 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 359 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 589 IncrementalHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 85 mSDtfsCounter, 589 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=4, InterpolantAutomatonStates: 59, 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, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 244 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 250 ConstructedInterpolants, 3 QuantifiedInterpolants, 1072 SizeOfPredicates, 13 NumberOfNonLiveVariables, 376 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 64/85 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 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Location Invariant Derived location invariant: ((((((((((__int128) X * y) * 2) + X) + v) == ((((__int128) Y * x) * 2) + ((long long) 2 * Y))) && (X <= 20)) && (0 <= Y)) && (0 <= X)) || ((((((((((__int128) X * y) * 2) + X) + v) == ((((__int128) Y * x) * 2) + ((long long) 2 * Y))) && (X <= 20)) && (0 <= Y)) && ((((__int128) X * y) + y) == ((__int128) x * y))) && (0 <= X))) RESULT: Ultimate proved your program to be correct! [2025-02-07 20:27:13,893 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