./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/in-de52.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/loops-crafted-1/in-de52.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 9b751a069fbdcae3e94881bf50bfce280447c39410a7e3e609a38e97e353596d --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 20:19:44,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 20:19:44,993 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 20:19:44,998 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 20:19:45,000 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 20:19:45,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 20:19:45,025 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 20:19:45,025 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 20:19:45,026 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 20:19:45,026 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 20:19:45,027 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 20:19:45,027 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 20:19:45,027 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 20:19:45,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 20:19:45,027 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 20:19:45,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 20:19:45,027 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 20:19:45,027 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 20:19:45,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 20:19:45,028 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 20:19:45,028 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 20:19:45,028 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 20:19:45,028 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 20:19:45,028 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 20:19:45,028 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 20:19:45,028 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 20:19:45,028 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 20:19:45,029 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 20:19:45,029 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 20:19:45,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 20:19:45,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 20:19:45,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 20:19:45,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:19:45,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 20:19:45,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 20:19:45,030 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 20:19:45,030 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 20:19:45,030 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 20:19:45,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 20:19:45,030 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 20:19:45,030 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 20:19:45,030 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 20:19:45,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 20:19:45,030 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 -> 9b751a069fbdcae3e94881bf50bfce280447c39410a7e3e609a38e97e353596d [2025-02-07 20:19:45,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 20:19:45,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 20:19:45,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 20:19:45,267 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 20:19:45,267 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 20:19:45,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/in-de52.c [2025-02-07 20:19:46,355 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ccdca6469/798c8d78e1ef41268ec7d13efb9a7372/FLAG53f1ac2e7 [2025-02-07 20:19:46,595 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 20:19:46,596 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de52.c [2025-02-07 20:19:46,604 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ccdca6469/798c8d78e1ef41268ec7d13efb9a7372/FLAG53f1ac2e7 [2025-02-07 20:19:46,920 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ccdca6469/798c8d78e1ef41268ec7d13efb9a7372 [2025-02-07 20:19:46,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 20:19:46,923 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 20:19:46,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 20:19:46,924 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 20:19:46,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 20:19:46,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:19:46" (1/1) ... [2025-02-07 20:19:46,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72204a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:46, skipping insertion in model container [2025-02-07 20:19:46,929 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:19:46" (1/1) ... [2025-02-07 20:19:46,938 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 20:19:47,028 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/loops-crafted-1/in-de52.c[368,381] [2025-02-07 20:19:47,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:19:47,049 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 20:19:47,057 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/loops-crafted-1/in-de52.c[368,381] [2025-02-07 20:19:47,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:19:47,069 INFO L204 MainTranslator]: Completed translation [2025-02-07 20:19:47,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:47 WrapperNode [2025-02-07 20:19:47,069 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 20:19:47,070 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 20:19:47,070 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 20:19:47,070 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 20:19:47,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:47" (1/1) ... [2025-02-07 20:19:47,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:47" (1/1) ... [2025-02-07 20:19:47,093 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2025-02-07 20:19:47,093 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 20:19:47,094 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 20:19:47,094 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 20:19:47,094 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 20:19:47,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:47" (1/1) ... [2025-02-07 20:19:47,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:47" (1/1) ... [2025-02-07 20:19:47,099 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:47" (1/1) ... [2025-02-07 20:19:47,104 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 20:19:47,104 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:47" (1/1) ... [2025-02-07 20:19:47,104 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:47" (1/1) ... [2025-02-07 20:19:47,105 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:47" (1/1) ... [2025-02-07 20:19:47,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:47" (1/1) ... [2025-02-07 20:19:47,106 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:47" (1/1) ... [2025-02-07 20:19:47,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:47" (1/1) ... [2025-02-07 20:19:47,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 20:19:47,107 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 20:19:47,108 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 20:19:47,108 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 20:19:47,108 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:47" (1/1) ... [2025-02-07 20:19:47,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:19:47,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:47,127 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 20:19:47,129 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 20:19:47,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 20:19:47,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 20:19:47,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 20:19:47,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 20:19:47,176 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 20:19:47,177 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 20:19:47,303 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-02-07 20:19:47,305 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 20:19:47,311 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 20:19:47,312 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 20:19:47,312 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:19:47 BoogieIcfgContainer [2025-02-07 20:19:47,312 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 20:19:47,314 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 20:19:47,314 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 20:19:47,318 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 20:19:47,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 08:19:46" (1/3) ... [2025-02-07 20:19:47,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b89f5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:19:47, skipping insertion in model container [2025-02-07 20:19:47,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:19:47" (2/3) ... [2025-02-07 20:19:47,319 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b89f5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:19:47, skipping insertion in model container [2025-02-07 20:19:47,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:19:47" (3/3) ... [2025-02-07 20:19:47,320 INFO L128 eAbstractionObserver]: Analyzing ICFG in-de52.c [2025-02-07 20:19:47,330 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 20:19:47,332 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG in-de52.c that has 1 procedures, 12 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-02-07 20:19:47,370 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 20:19:47,381 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;@5ca66296, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 20:19:47,382 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 20:19:47,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:19:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-07 20:19:47,389 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:47,389 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:47,390 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:47,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:47,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1865538297, now seen corresponding path program 1 times [2025-02-07 20:19:47,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:47,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475834447] [2025-02-07 20:19:47,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:19:47,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:47,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-07 20:19:47,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-07 20:19:47,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:19:47,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:19:47,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475834447] [2025-02-07 20:19:47,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475834447] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:19:47,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:19:47,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 20:19:47,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422431663] [2025-02-07 20:19:47,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:19:47,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 20:19:47,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:47,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 20:19:47,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 20:19:47,596 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 20:19:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:47,639 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2025-02-07 20:19:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 20:19:47,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-07 20:19:47,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:47,646 INFO L225 Difference]: With dead ends: 27 [2025-02-07 20:19:47,646 INFO L226 Difference]: Without dead ends: 14 [2025-02-07 20:19:47,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 20:19:47,650 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:47,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:19:47,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-02-07 20:19:47,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-02-07 20:19:47,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 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 20:19:47,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2025-02-07 20:19:47,680 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 21 transitions. Word has length 8 [2025-02-07 20:19:47,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:47,680 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 21 transitions. [2025-02-07 20:19:47,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 20:19:47,680 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 21 transitions. [2025-02-07 20:19:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-07 20:19:47,681 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:47,681 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:47,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 20:19:47,681 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:47,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:47,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1996280166, now seen corresponding path program 1 times [2025-02-07 20:19:47,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:47,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118203399] [2025-02-07 20:19:47,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:19:47,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:47,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-07 20:19:47,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-07 20:19:47,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:19:47,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:19:47,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:47,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118203399] [2025-02-07 20:19:47,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118203399] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:19:47,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:19:47,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 20:19:47,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157261437] [2025-02-07 20:19:47,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:19:47,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 20:19:47,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:47,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 20:19:47,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 20:19:47,750 INFO L87 Difference]: Start difference. First operand 14 states and 21 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 20:19:47,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:47,765 INFO L93 Difference]: Finished difference Result 24 states and 36 transitions. [2025-02-07 20:19:47,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 20:19:47,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-07 20:19:47,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:47,767 INFO L225 Difference]: With dead ends: 24 [2025-02-07 20:19:47,767 INFO L226 Difference]: Without dead ends: 19 [2025-02-07 20:19:47,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 20:19:47,768 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:47,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:19:47,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-02-07 20:19:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-02-07 20:19:47,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 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 20:19:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 29 transitions. [2025-02-07 20:19:47,781 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 29 transitions. Word has length 9 [2025-02-07 20:19:47,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:47,781 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 29 transitions. [2025-02-07 20:19:47,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 20:19:47,781 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 29 transitions. [2025-02-07 20:19:47,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-07 20:19:47,782 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:47,782 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:47,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 20:19:47,782 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:47,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:47,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1997144105, now seen corresponding path program 1 times [2025-02-07 20:19:47,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:47,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535819596] [2025-02-07 20:19:47,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:19:47,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:47,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-07 20:19:47,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-07 20:19:47,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:19:47,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:19:47,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:47,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535819596] [2025-02-07 20:19:47,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535819596] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:19:47,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:19:47,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 20:19:47,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371334858] [2025-02-07 20:19:47,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:19:47,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 20:19:47,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:47,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 20:19:47,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 20:19:47,814 INFO L87 Difference]: Start difference. First operand 19 states and 29 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 20:19:47,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:47,836 INFO L93 Difference]: Finished difference Result 30 states and 45 transitions. [2025-02-07 20:19:47,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 20:19:47,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-07 20:19:47,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:47,838 INFO L225 Difference]: With dead ends: 30 [2025-02-07 20:19:47,841 INFO L226 Difference]: Without dead ends: 23 [2025-02-07 20:19:47,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 20:19:47,842 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:47,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:19:47,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-02-07 20:19:47,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-02-07 20:19:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 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 20:19:47,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2025-02-07 20:19:47,857 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 34 transitions. Word has length 9 [2025-02-07 20:19:47,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:47,857 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 34 transitions. [2025-02-07 20:19:47,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 20:19:47,857 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2025-02-07 20:19:47,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-07 20:19:47,858 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:47,858 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:47,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-07 20:19:47,858 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:47,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1872395289, now seen corresponding path program 1 times [2025-02-07 20:19:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:47,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024565013] [2025-02-07 20:19:47,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:19:47,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:47,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-07 20:19:47,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-07 20:19:47,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:19:47,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:19:47,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:47,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024565013] [2025-02-07 20:19:47,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024565013] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:19:47,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:19:47,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 20:19:47,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861462674] [2025-02-07 20:19:47,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:19:47,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 20:19:47,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:47,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 20:19:47,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 20:19:47,920 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 20:19:47,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:47,955 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2025-02-07 20:19:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 20:19:47,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-07 20:19:47,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:47,956 INFO L225 Difference]: With dead ends: 29 [2025-02-07 20:19:47,956 INFO L226 Difference]: Without dead ends: 20 [2025-02-07 20:19:47,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:19:47,957 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:47,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:19:47,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-02-07 20:19:47,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-02-07 20:19:47,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 19 states have internal predecessors, (29), 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 20:19:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 29 transitions. [2025-02-07 20:19:47,965 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 29 transitions. Word has length 10 [2025-02-07 20:19:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:47,965 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 29 transitions. [2025-02-07 20:19:47,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 20:19:47,965 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 29 transitions. [2025-02-07 20:19:47,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-07 20:19:47,965 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:47,965 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:47,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-07 20:19:47,966 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:47,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:47,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1484491033, now seen corresponding path program 1 times [2025-02-07 20:19:47,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:47,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893716283] [2025-02-07 20:19:47,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:19:47,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:47,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-07 20:19:47,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-07 20:19:47,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:19:47,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:48,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:19:48,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:48,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893716283] [2025-02-07 20:19:48,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893716283] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:48,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453922875] [2025-02-07 20:19:48,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:19:48,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:48,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:48,076 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 20:19:48,078 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 20:19:48,115 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-07 20:19:48,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-07 20:19:48,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:19:48,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:48,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 20:19:48,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:19:48,159 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:19:48,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453922875] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:48,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-07 20:19:48,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 8 [2025-02-07 20:19:48,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959620648] [2025-02-07 20:19:48,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:19:48,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 20:19:48,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:48,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 20:19:48,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-02-07 20:19:48,201 INFO L87 Difference]: Start difference. First operand 20 states and 29 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 20:19:48,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:48,223 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2025-02-07 20:19:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 20:19:48,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-02-07 20:19:48,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:48,224 INFO L225 Difference]: With dead ends: 23 [2025-02-07 20:19:48,224 INFO L226 Difference]: Without dead ends: 17 [2025-02-07 20:19:48,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-02-07 20:19:48,224 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:48,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:19:48,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-02-07 20:19:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2025-02-07 20:19:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 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 20:19:48,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2025-02-07 20:19:48,227 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 24 transitions. Word has length 11 [2025-02-07 20:19:48,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:48,228 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 24 transitions. [2025-02-07 20:19:48,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 20:19:48,228 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2025-02-07 20:19:48,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-07 20:19:48,228 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:48,228 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:48,235 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 20:19:48,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:48,433 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:48,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:48,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1891639494, now seen corresponding path program 1 times [2025-02-07 20:19:48,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:48,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186749909] [2025-02-07 20:19:48,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:19:48,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:48,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-07 20:19:48,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-07 20:19:48,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:19:48,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:19:48,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:48,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186749909] [2025-02-07 20:19:48,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186749909] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:48,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789855723] [2025-02-07 20:19:48,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:19:48,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:48,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:48,536 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 20:19:48,537 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 20:19:48,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-07 20:19:48,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-07 20:19:48,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:19:48,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:48,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 20:19:48,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:48,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:19:48,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:19:48,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789855723] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:48,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-07 20:19:48,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2025-02-07 20:19:48,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648277108] [2025-02-07 20:19:48,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:19:48,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 20:19:48,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:48,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 20:19:48,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-07 20:19:48,637 INFO L87 Difference]: Start difference. First operand 17 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 20:19:48,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:48,661 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2025-02-07 20:19:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 20:19:48,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-02-07 20:19:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:48,662 INFO L225 Difference]: With dead ends: 22 [2025-02-07 20:19:48,662 INFO L226 Difference]: Without dead ends: 14 [2025-02-07 20:19:48,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-07 20:19:48,664 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:48,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:19:48,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-02-07 20:19:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-02-07 20:19:48,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:19:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2025-02-07 20:19:48,669 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 11 [2025-02-07 20:19:48,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:48,669 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2025-02-07 20:19:48,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 20:19:48,669 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2025-02-07 20:19:48,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-07 20:19:48,670 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:48,670 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:48,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-07 20:19:48,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:48,874 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:48,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:48,875 INFO L85 PathProgramCache]: Analyzing trace with hash 422969812, now seen corresponding path program 1 times [2025-02-07 20:19:48,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:48,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557304474] [2025-02-07 20:19:48,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:19:48,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:48,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-07 20:19:48,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-07 20:19:48,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:19:48,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:19:48,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:48,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557304474] [2025-02-07 20:19:48,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557304474] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:48,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49170842] [2025-02-07 20:19:48,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:19:48,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:48,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:48,982 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 20:19:48,984 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 20:19:49,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-07 20:19:49,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-07 20:19:49,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:19:49,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:49,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-07 20:19:49,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:19:49,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:19:49,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49170842] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:49,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:49,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2025-02-07 20:19:49,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741686546] [2025-02-07 20:19:49,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:49,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-07 20:19:49,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:49,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-07 20:19:49,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2025-02-07 20:19:49,077 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:19:49,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:49,332 INFO L93 Difference]: Finished difference Result 62 states and 101 transitions. [2025-02-07 20:19:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-07 20:19:49,333 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-07 20:19:49,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:49,334 INFO L225 Difference]: With dead ends: 62 [2025-02-07 20:19:49,334 INFO L226 Difference]: Without dead ends: 52 [2025-02-07 20:19:49,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2025-02-07 20:19:49,335 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 27 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:49,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 32 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:19:49,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-02-07 20:19:49,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 24. [2025-02-07 20:19:49,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 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 20:19:49,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2025-02-07 20:19:49,341 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 12 [2025-02-07 20:19:49,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:49,341 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2025-02-07 20:19:49,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:19:49,341 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2025-02-07 20:19:49,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-07 20:19:49,342 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:49,342 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:49,353 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 20:19:49,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:49,546 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:49,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:49,546 INFO L85 PathProgramCache]: Analyzing trace with hash 423833751, now seen corresponding path program 1 times [2025-02-07 20:19:49,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:49,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696774105] [2025-02-07 20:19:49,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:19:49,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:49,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-07 20:19:49,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-07 20:19:49,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:19:49,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:19:49,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:49,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696774105] [2025-02-07 20:19:49,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696774105] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:49,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293225175] [2025-02-07 20:19:49,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:19:49,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:49,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:49,608 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 20:19:49,627 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 20:19:49,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-07 20:19:49,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-07 20:19:49,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:19:49,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:49,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 20:19:49,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:19:49,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:49,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:19:49,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293225175] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:49,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:49,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2025-02-07 20:19:49,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545411246] [2025-02-07 20:19:49,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:49,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 20:19:49,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:49,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 20:19:49,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 20:19:49,711 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:19:49,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:49,737 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2025-02-07 20:19:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 20:19:49,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-07 20:19:49,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:49,738 INFO L225 Difference]: With dead ends: 39 [2025-02-07 20:19:49,738 INFO L226 Difference]: Without dead ends: 32 [2025-02-07 20:19:49,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 20:19:49,739 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:49,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:19:49,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-07 20:19:49,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2025-02-07 20:19:49,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 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 20:19:49,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2025-02-07 20:19:49,749 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 12 [2025-02-07 20:19:49,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:49,750 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2025-02-07 20:19:49,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:19:49,751 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2025-02-07 20:19:49,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-07 20:19:49,751 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:49,751 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:49,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-07 20:19:49,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-07 20:19:49,952 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:49,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:49,953 INFO L85 PathProgramCache]: Analyzing trace with hash 227194030, now seen corresponding path program 1 times [2025-02-07 20:19:49,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:49,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844551898] [2025-02-07 20:19:49,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:19:49,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:49,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-07 20:19:49,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-07 20:19:49,966 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:19:49,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:19:50,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:50,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844551898] [2025-02-07 20:19:50,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844551898] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:50,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634916510] [2025-02-07 20:19:50,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:19:50,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:50,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:50,072 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 20:19:50,073 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 20:19:50,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-07 20:19:50,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-07 20:19:50,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:19:50,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:50,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-07 20:19:50,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:19:50,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:19:50,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634916510] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:50,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:50,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2025-02-07 20:19:50,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232352787] [2025-02-07 20:19:50,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:50,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-07 20:19:50,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:50,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-07 20:19:50,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-07 20:19:50,179 INFO L87 Difference]: Start difference. First operand 31 states and 43 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:19:50,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:50,219 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2025-02-07 20:19:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-07 20:19:50,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-07 20:19:50,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:50,219 INFO L225 Difference]: With dead ends: 44 [2025-02-07 20:19:50,219 INFO L226 Difference]: Without dead ends: 39 [2025-02-07 20:19:50,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-07 20:19:50,220 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:50,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:19:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-02-07 20:19:50,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2025-02-07 20:19:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 36 states have internal predecessors, (53), 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 20:19:50,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 53 transitions. [2025-02-07 20:19:50,234 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 53 transitions. Word has length 13 [2025-02-07 20:19:50,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:50,234 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 53 transitions. [2025-02-07 20:19:50,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:19:50,237 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 53 transitions. [2025-02-07 20:19:50,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-07 20:19:50,237 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:50,237 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:50,248 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 20:19:50,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:50,438 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:50,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:50,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1573670025, now seen corresponding path program 2 times [2025-02-07 20:19:50,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:50,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703178254] [2025-02-07 20:19:50,440 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:19:50,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:50,445 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-07 20:19:50,461 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-07 20:19:50,461 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:19:50,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-07 20:19:50,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:50,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703178254] [2025-02-07 20:19:50,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703178254] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:50,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602117938] [2025-02-07 20:19:50,506 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:19:50,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:50,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:50,512 INFO L229 MonitoredProcess]: Starting monitored process 7 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 20:19:50,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-07 20:19:50,533 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-07 20:19:50,542 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-07 20:19:50,542 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:19:50,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:50,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-07 20:19:50,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-07 20:19:50,569 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-07 20:19:50,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602117938] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:50,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:50,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 8 [2025-02-07 20:19:50,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294108062] [2025-02-07 20:19:50,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:50,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-07 20:19:50,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:50,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-07 20:19:50,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-07 20:19:50,605 INFO L87 Difference]: Start difference. First operand 37 states and 53 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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 20:19:50,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:50,664 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2025-02-07 20:19:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 20:19:50,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-07 20:19:50,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:50,665 INFO L225 Difference]: With dead ends: 74 [2025-02-07 20:19:50,665 INFO L226 Difference]: Without dead ends: 56 [2025-02-07 20:19:50,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2025-02-07 20:19:50,665 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:50,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 66 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:19:50,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-07 20:19:50,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2025-02-07 20:19:50,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.588235294117647) internal successors, (81), 51 states have internal predecessors, (81), 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 20:19:50,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 81 transitions. [2025-02-07 20:19:50,697 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 81 transitions. Word has length 14 [2025-02-07 20:19:50,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:50,697 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 81 transitions. [2025-02-07 20:19:50,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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 20:19:50,697 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 81 transitions. [2025-02-07 20:19:50,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-07 20:19:50,697 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:50,697 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:50,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-07 20:19:50,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-07 20:19:50,898 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:50,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:50,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1557184775, now seen corresponding path program 2 times [2025-02-07 20:19:50,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:50,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112730856] [2025-02-07 20:19:50,898 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:19:50,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:50,901 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-07 20:19:50,905 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-07 20:19:50,905 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:19:50,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 20:19:50,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:50,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112730856] [2025-02-07 20:19:50,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112730856] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:50,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958894118] [2025-02-07 20:19:50,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:19:50,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:50,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:50,982 INFO L229 MonitoredProcess]: Starting monitored process 8 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 20:19:50,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-07 20:19:51,005 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-07 20:19:51,013 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-07 20:19:51,013 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:19:51,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:51,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-07 20:19:51,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 20:19:51,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:51,081 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 20:19:51,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958894118] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:51,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:51,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-02-07 20:19:51,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804546649] [2025-02-07 20:19:51,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:51,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-07 20:19:51,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:51,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-07 20:19:51,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-02-07 20:19:51,082 INFO L87 Difference]: Start difference. First operand 52 states and 81 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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 20:19:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:51,200 INFO L93 Difference]: Finished difference Result 119 states and 188 transitions. [2025-02-07 20:19:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-07 20:19:51,200 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-07 20:19:51,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:51,201 INFO L225 Difference]: With dead ends: 119 [2025-02-07 20:19:51,201 INFO L226 Difference]: Without dead ends: 83 [2025-02-07 20:19:51,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2025-02-07 20:19:51,201 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:51,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 38 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:19:51,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-02-07 20:19:51,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 65. [2025-02-07 20:19:51,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.5) internal successors, (96), 64 states have internal predecessors, (96), 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 20:19:51,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 96 transitions. [2025-02-07 20:19:51,216 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 96 transitions. Word has length 14 [2025-02-07 20:19:51,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:51,216 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 96 transitions. [2025-02-07 20:19:51,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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 20:19:51,216 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 96 transitions. [2025-02-07 20:19:51,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-07 20:19:51,216 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:51,216 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:51,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-07 20:19:51,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:51,417 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:51,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:51,418 INFO L85 PathProgramCache]: Analyzing trace with hash 294531609, now seen corresponding path program 3 times [2025-02-07 20:19:51,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:51,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066850402] [2025-02-07 20:19:51,418 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:19:51,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:51,422 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-07 20:19:51,427 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-07 20:19:51,427 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-07 20:19:51,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-07 20:19:51,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:51,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066850402] [2025-02-07 20:19:51,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066850402] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:51,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450273188] [2025-02-07 20:19:51,532 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:19:51,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:51,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:51,534 INFO L229 MonitoredProcess]: Starting monitored process 9 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 20:19:51,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-07 20:19:51,555 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-07 20:19:51,564 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-07 20:19:51,564 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-07 20:19:51,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:51,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-07 20:19:51,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:19:51,626 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-07 20:19:51,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450273188] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:51,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:51,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2025-02-07 20:19:51,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277754275] [2025-02-07 20:19:51,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:51,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-07 20:19:51,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:51,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-07 20:19:51,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2025-02-07 20:19:51,762 INFO L87 Difference]: Start difference. First operand 65 states and 96 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 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 20:19:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:52,177 INFO L93 Difference]: Finished difference Result 113 states and 173 transitions. [2025-02-07 20:19:52,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-07 20:19:52,178 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-07 20:19:52,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:52,178 INFO L225 Difference]: With dead ends: 113 [2025-02-07 20:19:52,178 INFO L226 Difference]: Without dead ends: 88 [2025-02-07 20:19:52,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=733, Unknown=0, NotChecked=0, Total=992 [2025-02-07 20:19:52,179 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 25 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:52,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 62 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 20:19:52,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-02-07 20:19:52,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 64. [2025-02-07 20:19:52,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.5396825396825398) internal successors, (97), 63 states have internal predecessors, (97), 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 20:19:52,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 97 transitions. [2025-02-07 20:19:52,213 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 97 transitions. Word has length 16 [2025-02-07 20:19:52,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:52,214 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 97 transitions. [2025-02-07 20:19:52,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 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 20:19:52,214 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 97 transitions. [2025-02-07 20:19:52,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-07 20:19:52,214 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:52,215 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:52,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-07 20:19:52,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:52,416 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:52,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:52,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1268577335, now seen corresponding path program 2 times [2025-02-07 20:19:52,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:52,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974041626] [2025-02-07 20:19:52,416 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:19:52,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:52,419 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-07 20:19:52,424 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-07 20:19:52,424 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:19:52,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-07 20:19:52,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:52,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974041626] [2025-02-07 20:19:52,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974041626] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:52,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486405200] [2025-02-07 20:19:52,494 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:19:52,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:52,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:52,498 INFO L229 MonitoredProcess]: Starting monitored process 10 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 20:19:52,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-07 20:19:52,523 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-07 20:19:52,532 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-07 20:19:52,532 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:19:52,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:52,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-07 20:19:52,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:19:52,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:19:52,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486405200] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:52,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:52,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-02-07 20:19:52,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118991355] [2025-02-07 20:19:52,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:52,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-07 20:19:52,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:52,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-07 20:19:52,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-02-07 20:19:52,647 INFO L87 Difference]: Start difference. First operand 64 states and 97 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 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 20:19:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:53,113 INFO L93 Difference]: Finished difference Result 159 states and 252 transitions. [2025-02-07 20:19:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-07 20:19:53,113 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-07 20:19:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:53,114 INFO L225 Difference]: With dead ends: 159 [2025-02-07 20:19:53,114 INFO L226 Difference]: Without dead ends: 128 [2025-02-07 20:19:53,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=925, Unknown=0, NotChecked=0, Total=1122 [2025-02-07 20:19:53,115 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 56 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:53,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 56 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 20:19:53,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-02-07 20:19:53,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 87. [2025-02-07 20:19:53,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.430232558139535) internal successors, (123), 86 states have internal predecessors, (123), 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 20:19:53,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 123 transitions. [2025-02-07 20:19:53,132 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 123 transitions. Word has length 16 [2025-02-07 20:19:53,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:53,132 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 123 transitions. [2025-02-07 20:19:53,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 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 20:19:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 123 transitions. [2025-02-07 20:19:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-07 20:19:53,133 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:53,133 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:53,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-07 20:19:53,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:53,337 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:53,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:53,337 INFO L85 PathProgramCache]: Analyzing trace with hash 647167778, now seen corresponding path program 3 times [2025-02-07 20:19:53,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:53,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966509691] [2025-02-07 20:19:53,337 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:19:53,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:53,341 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-02-07 20:19:53,348 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 17 statements. [2025-02-07 20:19:53,351 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-07 20:19:53,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-07 20:19:53,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:53,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966509691] [2025-02-07 20:19:53,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966509691] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:53,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725513586] [2025-02-07 20:19:53,438 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:19:53,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:53,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:53,439 INFO L229 MonitoredProcess]: Starting monitored process 11 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 20:19:53,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-07 20:19:53,461 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 3 equivalence classes. [2025-02-07 20:19:53,469 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 17 statements. [2025-02-07 20:19:53,469 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-07 20:19:53,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:53,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 20:19:53,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 20:19:53,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 20:19:53,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725513586] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:53,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:53,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2025-02-07 20:19:53,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606561231] [2025-02-07 20:19:53,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:53,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-07 20:19:53,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:53,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-07 20:19:53,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-02-07 20:19:53,535 INFO L87 Difference]: Start difference. First operand 87 states and 123 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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 20:19:53,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:53,681 INFO L93 Difference]: Finished difference Result 141 states and 208 transitions. [2025-02-07 20:19:53,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-07 20:19:53,682 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-02-07 20:19:53,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:53,683 INFO L225 Difference]: With dead ends: 141 [2025-02-07 20:19:53,683 INFO L226 Difference]: Without dead ends: 129 [2025-02-07 20:19:53,683 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2025-02-07 20:19:53,684 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:53,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 58 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:19:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-02-07 20:19:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2025-02-07 20:19:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.4954954954954955) internal successors, (166), 111 states have internal predecessors, (166), 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 20:19:53,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 166 transitions. [2025-02-07 20:19:53,711 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 166 transitions. Word has length 17 [2025-02-07 20:19:53,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:53,711 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 166 transitions. [2025-02-07 20:19:53,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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 20:19:53,711 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 166 transitions. [2025-02-07 20:19:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-07 20:19:53,712 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:53,712 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:53,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-07 20:19:53,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-07 20:19:53,913 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:53,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:53,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1812478820, now seen corresponding path program 4 times [2025-02-07 20:19:53,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:53,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078640181] [2025-02-07 20:19:53,915 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 20:19:53,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:53,919 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-07 20:19:53,927 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-07 20:19:53,927 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 20:19:53,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 20:19:54,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:54,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078640181] [2025-02-07 20:19:54,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078640181] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:54,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431266646] [2025-02-07 20:19:54,007 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 20:19:54,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:54,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:54,010 INFO L229 MonitoredProcess]: Starting monitored process 12 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 20:19:54,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-07 20:19:54,036 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-07 20:19:54,047 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-07 20:19:54,047 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 20:19:54,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:54,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-07 20:19:54,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 20:19:54,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 20:19:54,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431266646] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:54,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:54,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2025-02-07 20:19:54,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606972221] [2025-02-07 20:19:54,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:54,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-07 20:19:54,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:54,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-07 20:19:54,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-02-07 20:19:54,163 INFO L87 Difference]: Start difference. First operand 112 states and 166 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 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 20:19:54,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:54,402 INFO L93 Difference]: Finished difference Result 194 states and 284 transitions. [2025-02-07 20:19:54,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-07 20:19:54,402 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-02-07 20:19:54,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:54,403 INFO L225 Difference]: With dead ends: 194 [2025-02-07 20:19:54,403 INFO L226 Difference]: Without dead ends: 152 [2025-02-07 20:19:54,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2025-02-07 20:19:54,404 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:54,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 77 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:19:54,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2025-02-07 20:19:54,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 102. [2025-02-07 20:19:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.4752475247524752) internal successors, (149), 101 states have internal predecessors, (149), 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 20:19:54,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 149 transitions. [2025-02-07 20:19:54,429 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 149 transitions. Word has length 18 [2025-02-07 20:19:54,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:54,429 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 149 transitions. [2025-02-07 20:19:54,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 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 20:19:54,429 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 149 transitions. [2025-02-07 20:19:54,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-07 20:19:54,430 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:54,430 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:54,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-07 20:19:54,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-07 20:19:54,636 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:54,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash -688149320, now seen corresponding path program 3 times [2025-02-07 20:19:54,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:54,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972709457] [2025-02-07 20:19:54,637 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:19:54,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:54,640 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 3 equivalence classes. [2025-02-07 20:19:54,647 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-02-07 20:19:54,647 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 20:19:54,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-07 20:19:54,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:54,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972709457] [2025-02-07 20:19:54,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972709457] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:54,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851090899] [2025-02-07 20:19:54,717 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:19:54,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:54,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:54,722 INFO L229 MonitoredProcess]: Starting monitored process 13 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 20:19:54,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-07 20:19:54,744 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 3 equivalence classes. [2025-02-07 20:19:54,754 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 18 of 18 statements. [2025-02-07 20:19:54,754 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 20:19:54,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:54,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-07 20:19:54,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:19:54,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 20:19:54,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851090899] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:54,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:54,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-07 20:19:54,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155906391] [2025-02-07 20:19:54,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:54,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 20:19:54,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:54,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 20:19:54,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2025-02-07 20:19:54,980 INFO L87 Difference]: Start difference. First operand 102 states and 149 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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 20:19:55,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:55,986 INFO L93 Difference]: Finished difference Result 257 states and 393 transitions. [2025-02-07 20:19:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-07 20:19:55,991 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-02-07 20:19:55,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:55,992 INFO L225 Difference]: With dead ends: 257 [2025-02-07 20:19:55,992 INFO L226 Difference]: Without dead ends: 212 [2025-02-07 20:19:55,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 23 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=383, Invalid=2167, Unknown=0, NotChecked=0, Total=2550 [2025-02-07 20:19:55,994 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 82 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:55,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 63 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 20:19:55,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2025-02-07 20:19:56,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 123. [2025-02-07 20:19:56,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.3852459016393444) internal successors, (169), 122 states have internal predecessors, (169), 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 20:19:56,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 169 transitions. [2025-02-07 20:19:56,017 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 169 transitions. Word has length 18 [2025-02-07 20:19:56,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:56,018 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 169 transitions. [2025-02-07 20:19:56,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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 20:19:56,018 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 169 transitions. [2025-02-07 20:19:56,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-07 20:19:56,018 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:56,018 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:56,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-07 20:19:56,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:56,219 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:56,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:56,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1025743610, now seen corresponding path program 4 times [2025-02-07 20:19:56,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:56,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907518543] [2025-02-07 20:19:56,220 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 20:19:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:56,222 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-07 20:19:56,228 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-07 20:19:56,228 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 20:19:56,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 20:19:56,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:56,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907518543] [2025-02-07 20:19:56,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907518543] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:56,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026362280] [2025-02-07 20:19:56,321 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 20:19:56,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:56,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:56,325 INFO L229 MonitoredProcess]: Starting monitored process 14 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 20:19:56,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-07 20:19:56,348 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-07 20:19:56,356 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-07 20:19:56,357 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 20:19:56,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:56,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-07 20:19:56,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:56,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 20:19:56,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 20:19:56,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026362280] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:56,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:56,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-02-07 20:19:56,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638463409] [2025-02-07 20:19:56,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:56,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:19:56,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:56,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:19:56,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:19:56,397 INFO L87 Difference]: Start difference. First operand 123 states and 169 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 20:19:56,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:56,450 INFO L93 Difference]: Finished difference Result 136 states and 184 transitions. [2025-02-07 20:19:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:19:56,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-02-07 20:19:56,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:56,451 INFO L225 Difference]: With dead ends: 136 [2025-02-07 20:19:56,451 INFO L226 Difference]: Without dead ends: 120 [2025-02-07 20:19:56,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:19:56,452 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:56,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:19:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-02-07 20:19:56,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2025-02-07 20:19:56,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.3865546218487395) internal successors, (165), 119 states have internal predecessors, (165), 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 20:19:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 165 transitions. [2025-02-07 20:19:56,483 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 165 transitions. Word has length 19 [2025-02-07 20:19:56,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:56,484 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 165 transitions. [2025-02-07 20:19:56,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 20:19:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 165 transitions. [2025-02-07 20:19:56,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-07 20:19:56,485 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:56,485 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:56,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-07 20:19:56,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-07 20:19:56,686 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:56,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:56,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1064548020, now seen corresponding path program 5 times [2025-02-07 20:19:56,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:56,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692725395] [2025-02-07 20:19:56,687 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 20:19:56,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:56,702 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-02-07 20:19:56,708 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-02-07 20:19:56,709 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-07 20:19:56,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 20:19:56,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:56,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692725395] [2025-02-07 20:19:56,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692725395] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:56,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025072215] [2025-02-07 20:19:56,847 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 20:19:56,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:56,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:56,852 INFO L229 MonitoredProcess]: Starting monitored process 15 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 20:19:56,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-07 20:19:56,876 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 3 equivalence classes. [2025-02-07 20:19:56,888 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-02-07 20:19:56,889 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-07 20:19:56,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:56,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-07 20:19:56,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:19:57,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 20:19:57,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025072215] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:57,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:57,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 9] total 27 [2025-02-07 20:19:57,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992650637] [2025-02-07 20:19:57,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:57,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-07 20:19:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:57,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-07 20:19:57,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2025-02-07 20:19:57,139 INFO L87 Difference]: Start difference. First operand 120 states and 165 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 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 20:19:57,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:57,523 INFO L93 Difference]: Finished difference Result 154 states and 214 transitions. [2025-02-07 20:19:57,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-07 20:19:57,524 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-02-07 20:19:57,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:57,525 INFO L225 Difference]: With dead ends: 154 [2025-02-07 20:19:57,525 INFO L226 Difference]: Without dead ends: 137 [2025-02-07 20:19:57,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=385, Invalid=1021, Unknown=0, NotChecked=0, Total=1406 [2025-02-07 20:19:57,525 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 42 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:57,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 71 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 20:19:57,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2025-02-07 20:19:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 118. [2025-02-07 20:19:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.376068376068376) internal successors, (161), 117 states have internal predecessors, (161), 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 20:19:57,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 161 transitions. [2025-02-07 20:19:57,554 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 161 transitions. Word has length 20 [2025-02-07 20:19:57,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:57,554 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 161 transitions. [2025-02-07 20:19:57,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 27 states have internal predecessors, (46), 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 20:19:57,554 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 161 transitions. [2025-02-07 20:19:57,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-07 20:19:57,555 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:57,555 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:57,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-07 20:19:57,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-07 20:19:57,756 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:57,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:57,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1682010071, now seen corresponding path program 4 times [2025-02-07 20:19:57,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:57,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665279083] [2025-02-07 20:19:57,756 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 20:19:57,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:57,761 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-07 20:19:57,769 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-07 20:19:57,772 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 20:19:57,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:57,839 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 20:19:57,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:57,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665279083] [2025-02-07 20:19:57,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665279083] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:57,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513545317] [2025-02-07 20:19:57,840 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 20:19:57,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:57,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:57,844 INFO L229 MonitoredProcess]: Starting monitored process 16 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 20:19:57,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-07 20:19:57,864 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-02-07 20:19:57,874 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-07 20:19:57,874 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 20:19:57,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:57,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-07 20:19:57,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:57,912 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-07 20:19:57,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-07 20:19:57,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513545317] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:57,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:57,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 6] total 15 [2025-02-07 20:19:57,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676665378] [2025-02-07 20:19:57,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:57,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-07 20:19:57,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:57,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-07 20:19:57,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2025-02-07 20:19:57,982 INFO L87 Difference]: Start difference. First operand 118 states and 161 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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 20:19:58,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:58,207 INFO L93 Difference]: Finished difference Result 300 states and 441 transitions. [2025-02-07 20:19:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-07 20:19:58,207 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-02-07 20:19:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:58,208 INFO L225 Difference]: With dead ends: 300 [2025-02-07 20:19:58,208 INFO L226 Difference]: Without dead ends: 242 [2025-02-07 20:19:58,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2025-02-07 20:19:58,209 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 29 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:58,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 96 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 20:19:58,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2025-02-07 20:19:58,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 154. [2025-02-07 20:19:58,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.3071895424836601) internal successors, (200), 153 states have internal predecessors, (200), 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 20:19:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 200 transitions. [2025-02-07 20:19:58,255 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 200 transitions. Word has length 20 [2025-02-07 20:19:58,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:58,255 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 200 transitions. [2025-02-07 20:19:58,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 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 20:19:58,255 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 200 transitions. [2025-02-07 20:19:58,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-07 20:19:58,255 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:58,256 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:58,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-07 20:19:58,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:58,460 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:58,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:58,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1287343718, now seen corresponding path program 6 times [2025-02-07 20:19:58,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:58,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021231963] [2025-02-07 20:19:58,461 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 20:19:58,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:58,464 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-02-07 20:19:58,471 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-02-07 20:19:58,471 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-07 20:19:58,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-07 20:19:58,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:58,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021231963] [2025-02-07 20:19:58,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021231963] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:58,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859221978] [2025-02-07 20:19:58,530 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 20:19:58,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:58,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:58,532 INFO L229 MonitoredProcess]: Starting monitored process 17 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 20:19:58,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-07 20:19:58,566 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 3 equivalence classes. [2025-02-07 20:19:58,576 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-02-07 20:19:58,576 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-07 20:19:58,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:58,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-07 20:19:58,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-07 20:19:58,645 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:19:58,727 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-07 20:19:58,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859221978] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:19:58,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:19:58,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-02-07 20:19:58,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725293420] [2025-02-07 20:19:58,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:19:58,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-07 20:19:58,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:19:58,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-07 20:19:58,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2025-02-07 20:19:58,728 INFO L87 Difference]: Start difference. First operand 154 states and 200 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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 20:19:59,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:19:59,475 INFO L93 Difference]: Finished difference Result 174 states and 231 transitions. [2025-02-07 20:19:59,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-02-07 20:19:59,475 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-07 20:19:59,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:19:59,476 INFO L225 Difference]: With dead ends: 174 [2025-02-07 20:19:59,476 INFO L226 Difference]: Without dead ends: 165 [2025-02-07 20:19:59,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 32 SyntacticMatches, 8 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=1733, Unknown=0, NotChecked=0, Total=1980 [2025-02-07 20:19:59,477 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 40 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 20:19:59,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 79 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 20:19:59,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-02-07 20:19:59,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 120. [2025-02-07 20:19:59,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.3025210084033614) internal successors, (155), 119 states have internal predecessors, (155), 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 20:19:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2025-02-07 20:19:59,519 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 155 transitions. Word has length 21 [2025-02-07 20:19:59,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:19:59,519 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 155 transitions. [2025-02-07 20:19:59,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 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 20:19:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 155 transitions. [2025-02-07 20:19:59,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-07 20:19:59,520 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:19:59,520 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:19:59,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-07 20:19:59,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:59,724 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:19:59,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:19:59,724 INFO L85 PathProgramCache]: Analyzing trace with hash -773604388, now seen corresponding path program 5 times [2025-02-07 20:19:59,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:19:59,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933144081] [2025-02-07 20:19:59,724 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 20:19:59,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:19:59,728 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 4 equivalence classes. [2025-02-07 20:19:59,737 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 22 of 22 statements. [2025-02-07 20:19:59,737 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-07 20:19:59,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:59,834 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-07 20:19:59,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:19:59,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933144081] [2025-02-07 20:19:59,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933144081] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:19:59,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177821386] [2025-02-07 20:19:59,835 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 20:19:59,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:19:59,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:19:59,837 INFO L229 MonitoredProcess]: Starting monitored process 18 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 20:19:59,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-07 20:19:59,864 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 22 statements into 4 equivalence classes. [2025-02-07 20:19:59,891 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 22 of 22 statements. [2025-02-07 20:19:59,892 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-07 20:19:59,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:19:59,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-07 20:19:59,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:19:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-07 20:19:59,964 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-07 20:20:00,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177821386] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:00,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:00,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 27 [2025-02-07 20:20:00,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870502718] [2025-02-07 20:20:00,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:00,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-07 20:20:00,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:00,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-07 20:20:00,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2025-02-07 20:20:00,136 INFO L87 Difference]: Start difference. First operand 120 states and 155 transitions. Second operand has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 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 20:20:01,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:01,471 INFO L93 Difference]: Finished difference Result 326 states and 444 transitions. [2025-02-07 20:20:01,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2025-02-07 20:20:01,472 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-02-07 20:20:01,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:01,473 INFO L225 Difference]: With dead ends: 326 [2025-02-07 20:20:01,473 INFO L226 Difference]: Without dead ends: 282 [2025-02-07 20:20:01,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2056 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1026, Invalid=6114, Unknown=0, NotChecked=0, Total=7140 [2025-02-07 20:20:01,479 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 153 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:01,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 115 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-07 20:20:01,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2025-02-07 20:20:01,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 142. [2025-02-07 20:20:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.3191489361702127) internal successors, (186), 141 states have internal predecessors, (186), 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 20:20:01,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2025-02-07 20:20:01,521 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 22 [2025-02-07 20:20:01,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:01,521 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2025-02-07 20:20:01,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 27 states have internal predecessors, (39), 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 20:20:01,522 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2025-02-07 20:20:01,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-07 20:20:01,522 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:01,522 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:01,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-07 20:20:01,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:01,723 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:01,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash -56926066, now seen corresponding path program 5 times [2025-02-07 20:20:01,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:01,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300282620] [2025-02-07 20:20:01,724 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 20:20:01,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:01,728 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-02-07 20:20:01,739 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 20:20:01,739 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-07 20:20:01,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:01,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 20:20:01,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:01,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300282620] [2025-02-07 20:20:01,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300282620] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:01,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818899329] [2025-02-07 20:20:01,919 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 20:20:01,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:01,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:01,922 INFO L229 MonitoredProcess]: Starting monitored process 19 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 20:20:01,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-07 20:20:01,946 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-02-07 20:20:01,963 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 20:20:01,963 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-07 20:20:01,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:01,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-07 20:20:01,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 20:20:01,989 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-07 20:20:02,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818899329] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:02,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:02,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 13 [2025-02-07 20:20:02,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922787706] [2025-02-07 20:20:02,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:02,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 20:20:02,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:02,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 20:20:02,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-02-07 20:20:02,041 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 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 20:20:02,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:02,205 INFO L93 Difference]: Finished difference Result 188 states and 250 transitions. [2025-02-07 20:20:02,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-07 20:20:02,205 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-02-07 20:20:02,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:02,207 INFO L225 Difference]: With dead ends: 188 [2025-02-07 20:20:02,207 INFO L226 Difference]: Without dead ends: 171 [2025-02-07 20:20:02,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-02-07 20:20:02,209 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:02,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 64 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:20:02,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2025-02-07 20:20:02,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 150. [2025-02-07 20:20:02,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.3557046979865772) internal successors, (202), 149 states have internal predecessors, (202), 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 20:20:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 202 transitions. [2025-02-07 20:20:02,272 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 202 transitions. Word has length 23 [2025-02-07 20:20:02,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:02,272 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 202 transitions. [2025-02-07 20:20:02,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 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 20:20:02,272 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 202 transitions. [2025-02-07 20:20:02,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-07 20:20:02,272 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:02,272 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:02,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-07 20:20:02,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:02,473 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:02,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:02,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1732479273, now seen corresponding path program 6 times [2025-02-07 20:20:02,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:02,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139896127] [2025-02-07 20:20:02,473 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 20:20:02,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:02,478 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 24 statements into 3 equivalence classes. [2025-02-07 20:20:02,496 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 24 of 24 statements. [2025-02-07 20:20:02,496 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-07 20:20:02,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-07 20:20:02,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:02,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139896127] [2025-02-07 20:20:02,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139896127] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:02,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689313000] [2025-02-07 20:20:02,580 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 20:20:02,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:02,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:02,582 INFO L229 MonitoredProcess]: Starting monitored process 20 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 20:20:02,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-07 20:20:02,607 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 24 statements into 3 equivalence classes. [2025-02-07 20:20:02,625 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 24 of 24 statements. [2025-02-07 20:20:02,626 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-07 20:20:02,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:02,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-07 20:20:02,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:02,671 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-07 20:20:02,672 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-07 20:20:02,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689313000] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:02,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:02,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2025-02-07 20:20:02,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975124754] [2025-02-07 20:20:02,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:02,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 20:20:02,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:02,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 20:20:02,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:20:02,731 INFO L87 Difference]: Start difference. First operand 150 states and 202 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:20:02,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:02,823 INFO L93 Difference]: Finished difference Result 192 states and 253 transitions. [2025-02-07 20:20:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 20:20:02,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-02-07 20:20:02,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:02,824 INFO L225 Difference]: With dead ends: 192 [2025-02-07 20:20:02,824 INFO L226 Difference]: Without dead ends: 169 [2025-02-07 20:20:02,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:20:02,825 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:02,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:20:02,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2025-02-07 20:20:02,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2025-02-07 20:20:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.329268292682927) internal successors, (218), 164 states have internal predecessors, (218), 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 20:20:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 218 transitions. [2025-02-07 20:20:02,899 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 218 transitions. Word has length 24 [2025-02-07 20:20:02,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:02,899 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 218 transitions. [2025-02-07 20:20:02,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:20:02,899 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 218 transitions. [2025-02-07 20:20:02,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-07 20:20:02,900 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:02,900 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:02,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-07 20:20:03,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:03,100 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:03,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:03,101 INFO L85 PathProgramCache]: Analyzing trace with hash 993736148, now seen corresponding path program 7 times [2025-02-07 20:20:03,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:03,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269389605] [2025-02-07 20:20:03,101 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 20:20:03,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:03,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-07 20:20:03,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-07 20:20:03,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:03,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 20:20:03,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:03,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269389605] [2025-02-07 20:20:03,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269389605] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:03,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837101255] [2025-02-07 20:20:03,307 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 20:20:03,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:03,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:03,313 INFO L229 MonitoredProcess]: Starting monitored process 21 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 20:20:03,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-07 20:20:03,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-07 20:20:03,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-07 20:20:03,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:03,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:03,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-07 20:20:03,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 20:20:03,468 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 20:20:03,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837101255] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:03,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:03,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 21 [2025-02-07 20:20:03,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099938613] [2025-02-07 20:20:03,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:03,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-07 20:20:03,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:03,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-07 20:20:03,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2025-02-07 20:20:03,624 INFO L87 Difference]: Start difference. First operand 165 states and 218 transitions. Second operand has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 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 20:20:05,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:05,342 INFO L93 Difference]: Finished difference Result 272 states and 380 transitions. [2025-02-07 20:20:05,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2025-02-07 20:20:05,343 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-02-07 20:20:05,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:05,343 INFO L225 Difference]: With dead ends: 272 [2025-02-07 20:20:05,344 INFO L226 Difference]: Without dead ends: 229 [2025-02-07 20:20:05,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 36 SyntacticMatches, 10 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2494 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=580, Invalid=7792, Unknown=0, NotChecked=0, Total=8372 [2025-02-07 20:20:05,345 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 72 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:05,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 76 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-07 20:20:05,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-02-07 20:20:05,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 178. [2025-02-07 20:20:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.3559322033898304) internal successors, (240), 177 states have internal predecessors, (240), 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 20:20:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 240 transitions. [2025-02-07 20:20:05,408 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 240 transitions. Word has length 24 [2025-02-07 20:20:05,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:05,408 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 240 transitions. [2025-02-07 20:20:05,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 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 20:20:05,408 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 240 transitions. [2025-02-07 20:20:05,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-07 20:20:05,409 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:05,409 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:05,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-07 20:20:05,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:05,610 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:05,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:05,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2076466917, now seen corresponding path program 6 times [2025-02-07 20:20:05,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:05,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081674818] [2025-02-07 20:20:05,612 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 20:20:05,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:05,614 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 4 equivalence classes. [2025-02-07 20:20:05,624 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-02-07 20:20:05,624 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-07 20:20:05,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:05,723 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 20:20:05,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:05,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081674818] [2025-02-07 20:20:05,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081674818] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:05,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389215135] [2025-02-07 20:20:05,723 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 20:20:05,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:05,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:05,728 INFO L229 MonitoredProcess]: Starting monitored process 22 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 20:20:05,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-07 20:20:05,762 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 25 statements into 4 equivalence classes. [2025-02-07 20:20:05,775 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 25 of 25 statements. [2025-02-07 20:20:05,775 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-07 20:20:05,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:05,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-07 20:20:05,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:05,877 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-07 20:20:05,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-07 20:20:06,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389215135] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:06,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:06,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2025-02-07 20:20:06,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886332211] [2025-02-07 20:20:06,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:06,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-07 20:20:06,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:06,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-07 20:20:06,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2025-02-07 20:20:06,001 INFO L87 Difference]: Start difference. First operand 178 states and 240 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 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 20:20:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:07,330 INFO L93 Difference]: Finished difference Result 326 states and 451 transitions. [2025-02-07 20:20:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-02-07 20:20:07,330 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-02-07 20:20:07,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:07,331 INFO L225 Difference]: With dead ends: 326 [2025-02-07 20:20:07,331 INFO L226 Difference]: Without dead ends: 294 [2025-02-07 20:20:07,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 46 SyntacticMatches, 10 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=658, Invalid=4172, Unknown=0, NotChecked=0, Total=4830 [2025-02-07 20:20:07,333 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 88 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:07,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 83 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-07 20:20:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2025-02-07 20:20:07,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 212. [2025-02-07 20:20:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.2985781990521328) internal successors, (274), 211 states have internal predecessors, (274), 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 20:20:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 274 transitions. [2025-02-07 20:20:07,410 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 274 transitions. Word has length 25 [2025-02-07 20:20:07,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:07,410 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 274 transitions. [2025-02-07 20:20:07,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 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 20:20:07,410 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 274 transitions. [2025-02-07 20:20:07,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-07 20:20:07,411 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:07,411 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:07,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-07 20:20:07,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-07 20:20:07,615 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:07,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:07,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1897439239, now seen corresponding path program 8 times [2025-02-07 20:20:07,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:07,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414138958] [2025-02-07 20:20:07,616 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:20:07,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:07,618 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-07 20:20:07,624 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-07 20:20:07,624 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:20:07,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 20:20:07,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:07,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414138958] [2025-02-07 20:20:07,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414138958] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:07,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254370431] [2025-02-07 20:20:07,804 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:20:07,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:07,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:07,806 INFO L229 MonitoredProcess]: Starting monitored process 23 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 20:20:07,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-07 20:20:07,830 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-07 20:20:07,843 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-07 20:20:07,843 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:20:07,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:07,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-07 20:20:07,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-02-07 20:20:07,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-07 20:20:08,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254370431] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:08,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:08,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 28 [2025-02-07 20:20:08,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625902759] [2025-02-07 20:20:08,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:08,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-07 20:20:08,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:08,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-07 20:20:08,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2025-02-07 20:20:08,057 INFO L87 Difference]: Start difference. First operand 212 states and 274 transitions. Second operand has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 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 20:20:08,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:08,888 INFO L93 Difference]: Finished difference Result 310 states and 410 transitions. [2025-02-07 20:20:08,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-02-07 20:20:08,889 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-02-07 20:20:08,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:08,890 INFO L225 Difference]: With dead ends: 310 [2025-02-07 20:20:08,890 INFO L226 Difference]: Without dead ends: 244 [2025-02-07 20:20:08,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=307, Invalid=2143, Unknown=0, NotChecked=0, Total=2450 [2025-02-07 20:20:08,891 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 40 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:08,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 152 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 20:20:08,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2025-02-07 20:20:08,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 176. [2025-02-07 20:20:08,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.3142857142857143) internal successors, (230), 175 states have internal predecessors, (230), 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 20:20:08,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 230 transitions. [2025-02-07 20:20:08,950 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 230 transitions. Word has length 26 [2025-02-07 20:20:08,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:08,950 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 230 transitions. [2025-02-07 20:20:08,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 states have internal predecessors, (45), 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 20:20:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 230 transitions. [2025-02-07 20:20:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-07 20:20:08,950 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:08,951 INFO L218 NwaCegarLoop]: trace histogram [8, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:08,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-07 20:20:09,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-07 20:20:09,155 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:09,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash -519980295, now seen corresponding path program 7 times [2025-02-07 20:20:09,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:09,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888853873] [2025-02-07 20:20:09,156 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 20:20:09,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:09,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-07 20:20:09,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-07 20:20:09,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:09,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 20:20:09,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:09,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888853873] [2025-02-07 20:20:09,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888853873] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:09,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865162683] [2025-02-07 20:20:09,313 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 20:20:09,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:09,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:09,315 INFO L229 MonitoredProcess]: Starting monitored process 24 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 20:20:09,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-07 20:20:09,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-07 20:20:09,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-07 20:20:09,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:09,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:09,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-07 20:20:09,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 20:20:09,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 36 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 20:20:09,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865162683] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:09,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:09,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 9] total 25 [2025-02-07 20:20:09,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149744268] [2025-02-07 20:20:09,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:09,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-07 20:20:09,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:09,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-07 20:20:09,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2025-02-07 20:20:09,725 INFO L87 Difference]: Start difference. First operand 176 states and 230 transitions. Second operand has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 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 20:20:12,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:12,360 INFO L93 Difference]: Finished difference Result 342 states and 473 transitions. [2025-02-07 20:20:12,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2025-02-07 20:20:12,360 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-02-07 20:20:12,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:12,362 INFO L225 Difference]: With dead ends: 342 [2025-02-07 20:20:12,362 INFO L226 Difference]: Without dead ends: 290 [2025-02-07 20:20:12,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 42 SyntacticMatches, 12 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2734 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=926, Invalid=8776, Unknown=0, NotChecked=0, Total=9702 [2025-02-07 20:20:12,364 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 121 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:12,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 151 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-07 20:20:12,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2025-02-07 20:20:12,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 177. [2025-02-07 20:20:12,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.3011363636363635) internal successors, (229), 176 states have internal predecessors, (229), 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 20:20:12,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 229 transitions. [2025-02-07 20:20:12,432 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 229 transitions. Word has length 26 [2025-02-07 20:20:12,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:12,432 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 229 transitions. [2025-02-07 20:20:12,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 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 20:20:12,432 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 229 transitions. [2025-02-07 20:20:12,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-07 20:20:12,433 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:12,433 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:12,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-02-07 20:20:12,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-02-07 20:20:12,634 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:12,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:12,634 INFO L85 PathProgramCache]: Analyzing trace with hash -401141178, now seen corresponding path program 7 times [2025-02-07 20:20:12,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:12,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461403601] [2025-02-07 20:20:12,634 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 20:20:12,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:12,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-07 20:20:12,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-07 20:20:12,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:12,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-07 20:20:12,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:12,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461403601] [2025-02-07 20:20:12,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461403601] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:12,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373895940] [2025-02-07 20:20:12,723 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 20:20:12,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:12,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:12,728 INFO L229 MonitoredProcess]: Starting monitored process 25 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 20:20:12,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-07 20:20:12,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-07 20:20:12,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-07 20:20:12,767 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:20:12,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:12,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-07 20:20:12,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-07 20:20:12,829 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-07 20:20:12,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373895940] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:12,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:12,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-02-07 20:20:12,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650286354] [2025-02-07 20:20:12,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:12,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-07 20:20:12,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:12,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-07 20:20:12,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-02-07 20:20:12,881 INFO L87 Difference]: Start difference. First operand 177 states and 229 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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 20:20:13,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:13,241 INFO L93 Difference]: Finished difference Result 292 states and 404 transitions. [2025-02-07 20:20:13,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-07 20:20:13,241 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-02-07 20:20:13,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:13,244 INFO L225 Difference]: With dead ends: 292 [2025-02-07 20:20:13,244 INFO L226 Difference]: Without dead ends: 269 [2025-02-07 20:20:13,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2025-02-07 20:20:13,247 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:13,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 61 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:20:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2025-02-07 20:20:13,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 249. [2025-02-07 20:20:13,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.314516129032258) internal successors, (326), 248 states have internal predecessors, (326), 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 20:20:13,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 326 transitions. [2025-02-07 20:20:13,357 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 326 transitions. Word has length 27 [2025-02-07 20:20:13,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:13,358 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 326 transitions. [2025-02-07 20:20:13,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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 20:20:13,358 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 326 transitions. [2025-02-07 20:20:13,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-07 20:20:13,358 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:13,358 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:13,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-07 20:20:13,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-07 20:20:13,563 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:13,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:13,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1447664953, now seen corresponding path program 8 times [2025-02-07 20:20:13,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:13,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33043113] [2025-02-07 20:20:13,564 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:20:13,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:13,566 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-07 20:20:13,572 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 20:20:13,572 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:20:13,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:13,690 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 20:20:13,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:13,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33043113] [2025-02-07 20:20:13,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33043113] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:13,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699629708] [2025-02-07 20:20:13,690 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:20:13,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:13,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:13,694 INFO L229 MonitoredProcess]: Starting monitored process 26 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 20:20:13,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-07 20:20:13,725 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-07 20:20:13,745 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 20:20:13,745 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:20:13,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:13,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-02-07 20:20:13,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:13,872 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:20:13,872 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-07 20:20:14,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699629708] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:14,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:14,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 25 [2025-02-07 20:20:14,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920336976] [2025-02-07 20:20:14,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:14,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-07 20:20:14,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:14,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-07 20:20:14,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2025-02-07 20:20:14,080 INFO L87 Difference]: Start difference. First operand 249 states and 326 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 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 20:20:14,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:14,563 INFO L93 Difference]: Finished difference Result 299 states and 387 transitions. [2025-02-07 20:20:14,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-07 20:20:14,564 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-02-07 20:20:14,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:14,565 INFO L225 Difference]: With dead ends: 299 [2025-02-07 20:20:14,565 INFO L226 Difference]: Without dead ends: 249 [2025-02-07 20:20:14,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2025-02-07 20:20:14,566 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:14,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 20:20:14,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2025-02-07 20:20:14,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217. [2025-02-07 20:20:14,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.337962962962963) internal successors, (289), 216 states have internal predecessors, (289), 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 20:20:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 289 transitions. [2025-02-07 20:20:14,658 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 289 transitions. Word has length 28 [2025-02-07 20:20:14,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:14,658 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 289 transitions. [2025-02-07 20:20:14,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 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 20:20:14,659 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 289 transitions. [2025-02-07 20:20:14,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-07 20:20:14,659 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:14,660 INFO L218 NwaCegarLoop]: trace histogram [9, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:14,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-02-07 20:20:14,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-07 20:20:14,864 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:14,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1477445992, now seen corresponding path program 8 times [2025-02-07 20:20:14,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:14,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10319999] [2025-02-07 20:20:14,864 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:20:14,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:14,867 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-07 20:20:14,873 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 20:20:14,873 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:20:14,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 20:20:15,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:15,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10319999] [2025-02-07 20:20:15,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10319999] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882469191] [2025-02-07 20:20:15,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:20:15,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:15,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:15,070 INFO L229 MonitoredProcess]: Starting monitored process 27 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 20:20:15,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-07 20:20:15,098 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-07 20:20:15,111 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 20:20:15,111 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:20:15,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:15,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-07 20:20:15,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 21 proven. 49 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 20:20:15,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 21 proven. 49 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 20:20:15,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882469191] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:15,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:15,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10, 10] total 28 [2025-02-07 20:20:15,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287834140] [2025-02-07 20:20:15,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:15,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-07 20:20:15,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:15,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-07 20:20:15,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2025-02-07 20:20:15,518 INFO L87 Difference]: Start difference. First operand 217 states and 289 transitions. Second operand has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 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 20:20:18,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:18,820 INFO L93 Difference]: Finished difference Result 439 states and 629 transitions. [2025-02-07 20:20:18,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2025-02-07 20:20:18,821 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-02-07 20:20:18,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:18,822 INFO L225 Difference]: With dead ends: 439 [2025-02-07 20:20:18,822 INFO L226 Difference]: Without dead ends: 374 [2025-02-07 20:20:18,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 44 SyntacticMatches, 14 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3988 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1183, Invalid=11927, Unknown=0, NotChecked=0, Total=13110 [2025-02-07 20:20:18,826 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 145 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:18,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 166 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-07 20:20:18,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2025-02-07 20:20:18,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 209. [2025-02-07 20:20:18,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.3365384615384615) internal successors, (278), 208 states have internal predecessors, (278), 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 20:20:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 278 transitions. [2025-02-07 20:20:18,907 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 278 transitions. Word has length 28 [2025-02-07 20:20:18,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:18,907 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 278 transitions. [2025-02-07 20:20:18,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 28 states have internal predecessors, (47), 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 20:20:18,907 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 278 transitions. [2025-02-07 20:20:18,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-07 20:20:18,908 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:18,908 INFO L218 NwaCegarLoop]: trace histogram [8, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:18,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-02-07 20:20:19,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:19,109 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:19,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:19,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1272810310, now seen corresponding path program 9 times [2025-02-07 20:20:19,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:19,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142542599] [2025-02-07 20:20:19,109 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:20:19,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:19,112 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 5 equivalence classes. [2025-02-07 20:20:19,123 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 29 statements. [2025-02-07 20:20:19,123 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 20:20:19,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-07 20:20:19,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142542599] [2025-02-07 20:20:19,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142542599] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179499937] [2025-02-07 20:20:19,204 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:20:19,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:19,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:19,206 INFO L229 MonitoredProcess]: Starting monitored process 28 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 20:20:19,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-07 20:20:19,231 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 5 equivalence classes. [2025-02-07 20:20:19,252 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 29 statements. [2025-02-07 20:20:19,253 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 20:20:19,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:19,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-07 20:20:19,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-07 20:20:19,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-07 20:20:19,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179499937] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:19,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:19,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-02-07 20:20:19,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133582040] [2025-02-07 20:20:19,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:19,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-07 20:20:19,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:19,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-07 20:20:19,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2025-02-07 20:20:19,372 INFO L87 Difference]: Start difference. First operand 209 states and 278 transitions. Second operand has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 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 20:20:20,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:20,319 INFO L93 Difference]: Finished difference Result 597 states and 901 transitions. [2025-02-07 20:20:20,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-07 20:20:20,320 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-02-07 20:20:20,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:20,322 INFO L225 Difference]: With dead ends: 597 [2025-02-07 20:20:20,322 INFO L226 Difference]: Without dead ends: 578 [2025-02-07 20:20:20,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=363, Invalid=759, Unknown=0, NotChecked=0, Total=1122 [2025-02-07 20:20:20,322 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 105 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:20,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 159 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 20:20:20,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2025-02-07 20:20:20,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 297. [2025-02-07 20:20:20,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.4256756756756757) internal successors, (422), 296 states have internal predecessors, (422), 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 20:20:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 422 transitions. [2025-02-07 20:20:20,447 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 422 transitions. Word has length 29 [2025-02-07 20:20:20,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:20,447 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 422 transitions. [2025-02-07 20:20:20,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 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 20:20:20,447 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 422 transitions. [2025-02-07 20:20:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-07 20:20:20,448 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:20,448 INFO L218 NwaCegarLoop]: trace histogram [10, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:20,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-02-07 20:20:20,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-02-07 20:20:20,649 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:20,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:20,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1738130855, now seen corresponding path program 9 times [2025-02-07 20:20:20,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:20,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669681791] [2025-02-07 20:20:20,651 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:20:20,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:20,653 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 6 equivalence classes. [2025-02-07 20:20:20,661 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 24 of 30 statements. [2025-02-07 20:20:20,661 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 20:20:20,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-02-07 20:20:20,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:20,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669681791] [2025-02-07 20:20:20,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669681791] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:20,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549973027] [2025-02-07 20:20:20,951 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:20:20,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:20,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:20,957 INFO L229 MonitoredProcess]: Starting monitored process 29 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 20:20:20,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-07 20:20:20,998 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 6 equivalence classes. [2025-02-07 20:20:21,022 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 24 of 30 statements. [2025-02-07 20:20:21,022 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 20:20:21,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:21,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-07 20:20:21,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-02-07 20:20:21,204 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-02-07 20:20:21,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549973027] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:21,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:21,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-02-07 20:20:21,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370725967] [2025-02-07 20:20:21,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:21,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-07 20:20:21,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:21,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-07 20:20:21,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2025-02-07 20:20:21,643 INFO L87 Difference]: Start difference. First operand 297 states and 422 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:20:23,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:23,596 INFO L93 Difference]: Finished difference Result 367 states and 505 transitions. [2025-02-07 20:20:23,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-07 20:20:23,597 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-02-07 20:20:23,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:23,598 INFO L225 Difference]: With dead ends: 367 [2025-02-07 20:20:23,598 INFO L226 Difference]: Without dead ends: 352 [2025-02-07 20:20:23,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2025-02-07 20:20:23,598 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:23,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 54 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-07 20:20:23,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2025-02-07 20:20:23,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 288. [2025-02-07 20:20:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.4076655052264808) internal successors, (404), 287 states have internal predecessors, (404), 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 20:20:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 404 transitions. [2025-02-07 20:20:23,722 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 404 transitions. Word has length 30 [2025-02-07 20:20:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:23,722 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 404 transitions. [2025-02-07 20:20:23,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:20:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 404 transitions. [2025-02-07 20:20:23,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-07 20:20:23,723 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:23,723 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:23,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-02-07 20:20:23,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:23,923 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:23,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:23,924 INFO L85 PathProgramCache]: Analyzing trace with hash -402972841, now seen corresponding path program 9 times [2025-02-07 20:20:23,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:23,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440625402] [2025-02-07 20:20:23,924 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:20:23,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:23,927 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 4 equivalence classes. [2025-02-07 20:20:23,942 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 20:20:23,943 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 20:20:23,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-07 20:20:24,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:24,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440625402] [2025-02-07 20:20:24,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440625402] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:24,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118163301] [2025-02-07 20:20:24,033 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 20:20:24,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:24,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:24,035 INFO L229 MonitoredProcess]: Starting monitored process 30 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 20:20:24,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-02-07 20:20:24,060 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 4 equivalence classes. [2025-02-07 20:20:24,116 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 20:20:24,116 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 20:20:24,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:24,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-07 20:20:24,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-07 20:20:24,194 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-07 20:20:24,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118163301] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:24,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:24,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 14 [2025-02-07 20:20:24,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207133959] [2025-02-07 20:20:24,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:24,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-07 20:20:24,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:24,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-07 20:20:24,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2025-02-07 20:20:24,311 INFO L87 Difference]: Start difference. First operand 288 states and 404 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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 20:20:24,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:24,903 INFO L93 Difference]: Finished difference Result 512 states and 749 transitions. [2025-02-07 20:20:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-07 20:20:24,903 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-02-07 20:20:24,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:24,905 INFO L225 Difference]: With dead ends: 512 [2025-02-07 20:20:24,905 INFO L226 Difference]: Without dead ends: 485 [2025-02-07 20:20:24,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 52 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2025-02-07 20:20:24,906 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 36 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:24,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 76 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:20:24,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2025-02-07 20:20:25,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 436. [2025-02-07 20:20:25,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 1.4229885057471265) internal successors, (619), 435 states have internal predecessors, (619), 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 20:20:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 619 transitions. [2025-02-07 20:20:25,159 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 619 transitions. Word has length 32 [2025-02-07 20:20:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:25,159 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 619 transitions. [2025-02-07 20:20:25,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 14 states have internal predecessors, (34), 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 20:20:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 619 transitions. [2025-02-07 20:20:25,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-07 20:20:25,163 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:25,163 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:25,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-02-07 20:20:25,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:25,364 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:25,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:25,364 INFO L85 PathProgramCache]: Analyzing trace with hash -585414436, now seen corresponding path program 10 times [2025-02-07 20:20:25,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:25,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226567767] [2025-02-07 20:20:25,364 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 20:20:25,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:25,368 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-02-07 20:20:25,375 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 20:20:25,376 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 20:20:25,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 20:20:25,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:25,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226567767] [2025-02-07 20:20:25,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226567767] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:25,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534912816] [2025-02-07 20:20:25,549 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 20:20:25,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:25,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:25,552 INFO L229 MonitoredProcess]: Starting monitored process 31 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 20:20:25,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-02-07 20:20:25,598 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-02-07 20:20:25,612 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 20:20:25,613 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 20:20:25,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:25,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-02-07 20:20:25,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 20:20:25,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 20:20:26,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534912816] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:26,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:26,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 35 [2025-02-07 20:20:26,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470096641] [2025-02-07 20:20:26,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:26,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-07 20:20:26,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:26,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-07 20:20:26,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1061, Unknown=0, NotChecked=0, Total=1260 [2025-02-07 20:20:26,032 INFO L87 Difference]: Start difference. First operand 436 states and 619 transitions. Second operand has 36 states, 36 states have (on average 1.25) internal successors, (45), 35 states have internal predecessors, (45), 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 20:20:51,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:51,832 INFO L93 Difference]: Finished difference Result 1356 states and 1899 transitions. [2025-02-07 20:20:51,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 458 states. [2025-02-07 20:20:51,833 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.25) internal successors, (45), 35 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-02-07 20:20:51,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:51,836 INFO L225 Difference]: With dead ends: 1356 [2025-02-07 20:20:51,836 INFO L226 Difference]: Without dead ends: 1106 [2025-02-07 20:20:51,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 457 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95292 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=23911, Invalid=186311, Unknown=0, NotChecked=0, Total=210222 [2025-02-07 20:20:51,849 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 1019 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 1490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 3602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1490 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:51,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 287 Invalid, 3602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1490 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-02-07 20:20:51,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2025-02-07 20:20:52,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 474. [2025-02-07 20:20:52,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 1.4291754756871036) internal successors, (676), 473 states have internal predecessors, (676), 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 20:20:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 676 transitions. [2025-02-07 20:20:52,259 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 676 transitions. Word has length 32 [2025-02-07 20:20:52,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:52,260 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 676 transitions. [2025-02-07 20:20:52,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.25) internal successors, (45), 35 states have internal predecessors, (45), 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 20:20:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 676 transitions. [2025-02-07 20:20:52,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-07 20:20:52,260 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:52,260 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:52,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2025-02-07 20:20:52,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-02-07 20:20:52,465 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:52,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:52,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1269347438, now seen corresponding path program 10 times [2025-02-07 20:20:52,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:52,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779676492] [2025-02-07 20:20:52,465 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 20:20:52,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:52,475 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-02-07 20:20:52,488 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 20:20:52,488 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 20:20:52,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-07 20:20:52,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:52,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779676492] [2025-02-07 20:20:52,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779676492] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:52,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408941441] [2025-02-07 20:20:52,609 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 20:20:52,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:52,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:52,611 INFO L229 MonitoredProcess]: Starting monitored process 32 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 20:20:52,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-02-07 20:20:52,638 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-02-07 20:20:52,654 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 20:20:52,654 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 20:20:52,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:52,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-02-07 20:20:52,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:52,683 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-07 20:20:52,683 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-07 20:20:52,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408941441] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:52,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:52,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2025-02-07 20:20:52,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143477567] [2025-02-07 20:20:52,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:52,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-07 20:20:52,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:52,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-07 20:20:52,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2025-02-07 20:20:52,796 INFO L87 Difference]: Start difference. First operand 474 states and 676 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 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 20:20:53,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:53,428 INFO L93 Difference]: Finished difference Result 568 states and 801 transitions. [2025-02-07 20:20:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-07 20:20:53,428 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-02-07 20:20:53,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:53,430 INFO L225 Difference]: With dead ends: 568 [2025-02-07 20:20:53,430 INFO L226 Difference]: Without dead ends: 529 [2025-02-07 20:20:53,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2025-02-07 20:20:53,431 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:53,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 108 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 20:20:53,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2025-02-07 20:20:53,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 471. [2025-02-07 20:20:53,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.451063829787234) internal successors, (682), 470 states have internal predecessors, (682), 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 20:20:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 682 transitions. [2025-02-07 20:20:53,774 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 682 transitions. Word has length 33 [2025-02-07 20:20:53,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:53,774 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 682 transitions. [2025-02-07 20:20:53,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 15 states have internal predecessors, (58), 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 20:20:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 682 transitions. [2025-02-07 20:20:53,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-07 20:20:53,775 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:53,775 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:53,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-02-07 20:20:53,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-02-07 20:20:53,976 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:53,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:53,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1273032635, now seen corresponding path program 11 times [2025-02-07 20:20:53,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:53,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502490492] [2025-02-07 20:20:53,976 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 20:20:53,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:53,982 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 6 equivalence classes. [2025-02-07 20:20:54,002 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 20:20:54,003 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-07 20:20:54,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 20:20:54,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:54,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502490492] [2025-02-07 20:20:54,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502490492] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:54,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664788875] [2025-02-07 20:20:54,306 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 20:20:54,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:54,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:54,308 INFO L229 MonitoredProcess]: Starting monitored process 33 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 20:20:54,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-02-07 20:20:54,336 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 33 statements into 6 equivalence classes. [2025-02-07 20:20:54,383 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 20:20:54,383 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-07 20:20:54,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:54,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-07 20:20:54,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-07 20:20:54,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-02-07 20:20:54,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664788875] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:54,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:54,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16, 10] total 35 [2025-02-07 20:20:54,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714864259] [2025-02-07 20:20:54,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:54,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-07 20:20:54,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:54,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-07 20:20:54,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2025-02-07 20:20:54,694 INFO L87 Difference]: Start difference. First operand 471 states and 682 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 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 20:20:56,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:20:56,308 INFO L93 Difference]: Finished difference Result 925 states and 1348 transitions. [2025-02-07 20:20:56,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2025-02-07 20:20:56,309 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-02-07 20:20:56,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:20:56,311 INFO L225 Difference]: With dead ends: 925 [2025-02-07 20:20:56,311 INFO L226 Difference]: Without dead ends: 744 [2025-02-07 20:20:56,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1043, Invalid=4809, Unknown=0, NotChecked=0, Total=5852 [2025-02-07 20:20:56,312 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 163 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-07 20:20:56,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 234 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-07 20:20:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2025-02-07 20:20:56,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 466. [2025-02-07 20:20:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 1.4258064516129032) internal successors, (663), 465 states have internal predecessors, (663), 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 20:20:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 663 transitions. [2025-02-07 20:20:56,603 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 663 transitions. Word has length 33 [2025-02-07 20:20:56,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:20:56,604 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 663 transitions. [2025-02-07 20:20:56,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 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 20:20:56,604 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 663 transitions. [2025-02-07 20:20:56,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-07 20:20:56,604 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:20:56,604 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:20:56,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-02-07 20:20:56,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-02-07 20:20:56,808 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:20:56,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:20:56,808 INFO L85 PathProgramCache]: Analyzing trace with hash 207685369, now seen corresponding path program 12 times [2025-02-07 20:20:56,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:20:56,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735352059] [2025-02-07 20:20:56,808 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 20:20:56,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:20:56,812 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 34 statements into 5 equivalence classes. [2025-02-07 20:20:56,822 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 34 of 34 statements. [2025-02-07 20:20:56,823 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-07 20:20:56,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:20:57,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:20:57,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735352059] [2025-02-07 20:20:57,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735352059] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:20:57,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142241073] [2025-02-07 20:20:57,195 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 20:20:57,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:20:57,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:20:57,198 INFO L229 MonitoredProcess]: Starting monitored process 34 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 20:20:57,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-02-07 20:20:57,225 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 34 statements into 5 equivalence classes. [2025-02-07 20:20:57,274 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 34 of 34 statements. [2025-02-07 20:20:57,274 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-07 20:20:57,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:20:57,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-07 20:20:57,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:20:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-07 20:20:57,491 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:20:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 64 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-07 20:20:57,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142241073] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:20:57,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:20:57,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11, 11] total 32 [2025-02-07 20:20:57,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689264495] [2025-02-07 20:20:57,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:20:57,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-07 20:20:57,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:20:57,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-07 20:20:57,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=922, Unknown=0, NotChecked=0, Total=992 [2025-02-07 20:20:57,799 INFO L87 Difference]: Start difference. First operand 466 states and 663 transitions. Second operand has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 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 20:21:02,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:21:02,841 INFO L93 Difference]: Finished difference Result 739 states and 1033 transitions. [2025-02-07 20:21:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2025-02-07 20:21:02,841 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-02-07 20:21:02,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:21:02,844 INFO L225 Difference]: With dead ends: 739 [2025-02-07 20:21:02,844 INFO L226 Difference]: Without dead ends: 652 [2025-02-07 20:21:02,846 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 49 SyntacticMatches, 16 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9327 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1474, Invalid=25916, Unknown=0, NotChecked=0, Total=27390 [2025-02-07 20:21:02,846 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 180 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 3431 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 3679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 3431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-07 20:21:02,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 95 Invalid, 3679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 3431 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-07 20:21:02,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2025-02-07 20:21:03,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 449. [2025-02-07 20:21:03,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.3995535714285714) internal successors, (627), 448 states have internal predecessors, (627), 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 20:21:03,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 627 transitions. [2025-02-07 20:21:03,143 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 627 transitions. Word has length 34 [2025-02-07 20:21:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:21:03,143 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 627 transitions. [2025-02-07 20:21:03,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.8125) internal successors, (58), 32 states have internal predecessors, (58), 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 20:21:03,143 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 627 transitions. [2025-02-07 20:21:03,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-07 20:21:03,144 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:21:03,144 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:21:03,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2025-02-07 20:21:03,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:21:03,348 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:21:03,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:21:03,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1632593382, now seen corresponding path program 11 times [2025-02-07 20:21:03,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:21:03,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163585451] [2025-02-07 20:21:03,348 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 20:21:03,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:21:03,354 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 4 equivalence classes. [2025-02-07 20:21:03,365 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 37 of 37 statements. [2025-02-07 20:21:03,366 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-07 20:21:03,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:03,485 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-02-07 20:21:03,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:21:03,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163585451] [2025-02-07 20:21:03,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163585451] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:21:03,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039467679] [2025-02-07 20:21:03,485 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 20:21:03,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:21:03,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:21:03,489 INFO L229 MonitoredProcess]: Starting monitored process 35 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 20:21:03,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-02-07 20:21:03,519 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 4 equivalence classes. [2025-02-07 20:21:03,630 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 37 of 37 statements. [2025-02-07 20:21:03,630 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-07 20:21:03,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:03,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-07 20:21:03,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:21:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-02-07 20:21:03,664 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:21:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-02-07 20:21:03,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039467679] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:21:03,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:21:03,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2025-02-07 20:21:03,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996198210] [2025-02-07 20:21:03,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:21:03,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-07 20:21:03,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:21:03,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-07 20:21:03,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-07 20:21:03,747 INFO L87 Difference]: Start difference. First operand 449 states and 627 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 20:21:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:21:04,205 INFO L93 Difference]: Finished difference Result 520 states and 721 transitions. [2025-02-07 20:21:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-07 20:21:04,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-02-07 20:21:04,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:21:04,208 INFO L225 Difference]: With dead ends: 520 [2025-02-07 20:21:04,208 INFO L226 Difference]: Without dead ends: 495 [2025-02-07 20:21:04,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 65 SyntacticMatches, 14 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2025-02-07 20:21:04,208 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:21:04,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 79 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:21:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2025-02-07 20:21:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 483. [2025-02-07 20:21:04,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.392116182572614) internal successors, (671), 482 states have internal predecessors, (671), 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 20:21:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 671 transitions. [2025-02-07 20:21:04,503 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 671 transitions. Word has length 37 [2025-02-07 20:21:04,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:21:04,503 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 671 transitions. [2025-02-07 20:21:04,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 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 20:21:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 671 transitions. [2025-02-07 20:21:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-07 20:21:04,504 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:21:04,504 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:21:04,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-02-07 20:21:04,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-02-07 20:21:04,706 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:21:04,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:21:04,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1352054347, now seen corresponding path program 13 times [2025-02-07 20:21:04,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:21:04,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469484343] [2025-02-07 20:21:04,706 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 20:21:04,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:21:04,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-07 20:21:04,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-07 20:21:04,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:21:04,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:21:05,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:21:05,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469484343] [2025-02-07 20:21:05,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469484343] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:21:05,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746287974] [2025-02-07 20:21:05,094 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 20:21:05,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:21:05,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:21:05,096 INFO L229 MonitoredProcess]: Starting monitored process 36 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 20:21:05,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-02-07 20:21:05,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-07 20:21:05,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-07 20:21:05,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:21:05,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:05,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-02-07 20:21:05,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:21:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-07 20:21:05,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:21:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 9 proven. 81 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-07 20:21:05,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746287974] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:21:05,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:21:05,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 12] total 33 [2025-02-07 20:21:05,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165433841] [2025-02-07 20:21:05,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:21:05,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-07 20:21:05,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:21:05,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-07 20:21:05,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=990, Unknown=0, NotChecked=0, Total=1056 [2025-02-07 20:21:05,953 INFO L87 Difference]: Start difference. First operand 483 states and 671 transitions. Second operand has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 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 20:21:14,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:21:14,597 INFO L93 Difference]: Finished difference Result 797 states and 1102 transitions. [2025-02-07 20:21:14,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2025-02-07 20:21:14,598 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-02-07 20:21:14,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:21:14,600 INFO L225 Difference]: With dead ends: 797 [2025-02-07 20:21:14,600 INFO L226 Difference]: Without dead ends: 720 [2025-02-07 20:21:14,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 55 SyntacticMatches, 18 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18216 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2247, Invalid=47705, Unknown=0, NotChecked=0, Total=49952 [2025-02-07 20:21:14,602 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 245 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 5689 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 6006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 5689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-02-07 20:21:14,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 108 Invalid, 6006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 5689 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-02-07 20:21:14,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2025-02-07 20:21:14,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 487. [2025-02-07 20:21:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.374485596707819) internal successors, (668), 486 states have internal predecessors, (668), 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 20:21:14,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 668 transitions. [2025-02-07 20:21:14,905 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 668 transitions. Word has length 37 [2025-02-07 20:21:14,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:21:14,905 INFO L471 AbstractCegarLoop]: Abstraction has 487 states and 668 transitions. [2025-02-07 20:21:14,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 33 states have internal predecessors, (63), 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 20:21:14,906 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 668 transitions. [2025-02-07 20:21:14,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-07 20:21:14,906 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:21:14,906 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:21:14,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2025-02-07 20:21:15,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-02-07 20:21:15,107 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:21:15,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:21:15,107 INFO L85 PathProgramCache]: Analyzing trace with hash 474743385, now seen corresponding path program 12 times [2025-02-07 20:21:15,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:21:15,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395744889] [2025-02-07 20:21:15,107 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 20:21:15,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:21:15,110 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 4 equivalence classes. [2025-02-07 20:21:15,123 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 38 of 38 statements. [2025-02-07 20:21:15,123 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-07 20:21:15,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:15,281 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-07 20:21:15,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:21:15,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395744889] [2025-02-07 20:21:15,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395744889] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:21:15,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563554778] [2025-02-07 20:21:15,281 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 20:21:15,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:21:15,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:21:15,284 INFO L229 MonitoredProcess]: Starting monitored process 37 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 20:21:15,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-02-07 20:21:15,311 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 4 equivalence classes. [2025-02-07 20:21:15,329 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 38 of 38 statements. [2025-02-07 20:21:15,329 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-07 20:21:15,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:15,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-02-07 20:21:15,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:21:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-07 20:21:15,374 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:21:15,477 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-02-07 20:21:15,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563554778] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:21:15,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:21:15,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2025-02-07 20:21:15,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876918521] [2025-02-07 20:21:15,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:21:15,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-07 20:21:15,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:21:15,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-07 20:21:15,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2025-02-07 20:21:15,478 INFO L87 Difference]: Start difference. First operand 487 states and 668 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 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 20:21:16,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:21:16,190 INFO L93 Difference]: Finished difference Result 600 states and 815 transitions. [2025-02-07 20:21:16,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-07 20:21:16,190 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-02-07 20:21:16,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:21:16,192 INFO L225 Difference]: With dead ends: 600 [2025-02-07 20:21:16,192 INFO L226 Difference]: Without dead ends: 583 [2025-02-07 20:21:16,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2025-02-07 20:21:16,193 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 20:21:16,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 152 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 20:21:16,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2025-02-07 20:21:16,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 509. [2025-02-07 20:21:16,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.3838582677165354) internal successors, (703), 508 states have internal predecessors, (703), 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 20:21:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 703 transitions. [2025-02-07 20:21:16,551 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 703 transitions. Word has length 38 [2025-02-07 20:21:16,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:21:16,551 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 703 transitions. [2025-02-07 20:21:16,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 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 20:21:16,551 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 703 transitions. [2025-02-07 20:21:16,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-07 20:21:16,551 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:21:16,551 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:21:16,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-02-07 20:21:16,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-02-07 20:21:16,756 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:21:16,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:21:16,756 INFO L85 PathProgramCache]: Analyzing trace with hash 360988220, now seen corresponding path program 14 times [2025-02-07 20:21:16,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:21:16,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876478886] [2025-02-07 20:21:16,756 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:21:16,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:21:16,759 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-07 20:21:16,767 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-07 20:21:16,767 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:21:16,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:17,060 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 20:21:17,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:21:17,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876478886] [2025-02-07 20:21:17,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876478886] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:21:17,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230246437] [2025-02-07 20:21:17,061 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:21:17,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:21:17,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:21:17,063 INFO L229 MonitoredProcess]: Starting monitored process 38 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 20:21:17,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-02-07 20:21:17,089 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-07 20:21:17,109 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-07 20:21:17,109 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:21:17,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:17,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-07 20:21:17,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:21:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 20 proven. 100 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-07 20:21:17,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:21:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 20 proven. 100 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-07 20:21:17,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230246437] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:21:17,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:21:17,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13, 13] total 37 [2025-02-07 20:21:17,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974774537] [2025-02-07 20:21:17,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:21:17,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-02-07 20:21:17,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:21:17,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-02-07 20:21:17,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1253, Unknown=0, NotChecked=0, Total=1332 [2025-02-07 20:21:17,876 INFO L87 Difference]: Start difference. First operand 509 states and 703 transitions. Second operand has 37 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 37 states have internal predecessors, (67), 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 20:21:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:21:27,961 INFO L93 Difference]: Finished difference Result 1026 states and 1466 transitions. [2025-02-07 20:21:27,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2025-02-07 20:21:27,962 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 37 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-02-07 20:21:27,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:21:27,964 INFO L225 Difference]: With dead ends: 1026 [2025-02-07 20:21:27,964 INFO L226 Difference]: Without dead ends: 840 [2025-02-07 20:21:27,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 64 SyntacticMatches, 20 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12428 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=2742, Invalid=33930, Unknown=0, NotChecked=0, Total=36672 [2025-02-07 20:21:27,966 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 274 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 3364 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 3653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 3364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-07 20:21:27,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 250 Invalid, 3653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 3364 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-07 20:21:27,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2025-02-07 20:21:28,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 524. [2025-02-07 20:21:28,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 1.367112810707457) internal successors, (715), 523 states have internal predecessors, (715), 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 20:21:28,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 715 transitions. [2025-02-07 20:21:28,394 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 715 transitions. Word has length 38 [2025-02-07 20:21:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:21:28,394 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 715 transitions. [2025-02-07 20:21:28,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.8108108108108107) internal successors, (67), 37 states have internal predecessors, (67), 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 20:21:28,394 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 715 transitions. [2025-02-07 20:21:28,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-07 20:21:28,395 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:21:28,395 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:21:28,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-02-07 20:21:28,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:21:28,599 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:21:28,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:21:28,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1058868154, now seen corresponding path program 13 times [2025-02-07 20:21:28,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:21:28,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675750468] [2025-02-07 20:21:28,599 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 20:21:28,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:21:28,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-07 20:21:28,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-07 20:21:28,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:21:28,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-02-07 20:21:28,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:21:28,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675750468] [2025-02-07 20:21:28,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675750468] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:21:28,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624923799] [2025-02-07 20:21:28,722 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 20:21:28,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:21:28,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:21:28,724 INFO L229 MonitoredProcess]: Starting monitored process 39 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 20:21:28,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-02-07 20:21:28,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-07 20:21:28,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-07 20:21:28,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:21:28,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:21:28,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-07 20:21:28,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:21:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-02-07 20:21:28,801 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:21:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-02-07 20:21:28,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624923799] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:21:28,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:21:28,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2025-02-07 20:21:28,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574062592] [2025-02-07 20:21:28,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:21:28,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-07 20:21:28,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:21:28,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-07 20:21:28,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-07 20:21:28,884 INFO L87 Difference]: Start difference. First operand 524 states and 715 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 20:21:29,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:21:29,422 INFO L93 Difference]: Finished difference Result 561 states and 767 transitions. [2025-02-07 20:21:29,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 20:21:29,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-02-07 20:21:29,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:21:29,424 INFO L225 Difference]: With dead ends: 561 [2025-02-07 20:21:29,424 INFO L226 Difference]: Without dead ends: 514 [2025-02-07 20:21:29,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 72 SyntacticMatches, 12 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-07 20:21:29,425 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:21:29,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 81 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:21:29,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2025-02-07 20:21:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2025-02-07 20:21:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 1.3703703703703705) internal successors, (703), 513 states have internal predecessors, (703), 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 20:21:29,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 703 transitions. [2025-02-07 20:21:29,863 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 703 transitions. Word has length 39 [2025-02-07 20:21:29,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:21:29,863 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 703 transitions. [2025-02-07 20:21:29,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 20:21:29,863 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 703 transitions. [2025-02-07 20:21:29,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-07 20:21:29,873 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:21:29,873 INFO L218 NwaCegarLoop]: trace histogram [12, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:21:29,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0