./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/watermelon.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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/watermelon.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 dda0b992ac1600896503297d86377b482d0a82ded923ea00c7e9ff3fed4db7e7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 14:57:05,099 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 14:57:05,133 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 14:57:05,137 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 14:57:05,137 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 14:57:05,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 14:57:05,152 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 14:57:05,152 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 14:57:05,152 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 14:57:05,152 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 14:57:05,152 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 14:57:05,152 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 14:57:05,153 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 14:57:05,153 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 14:57:05,153 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 14:57:05,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 14:57:05,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 14:57:05,153 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 14:57:05,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 14:57:05,153 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 14:57:05,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 14:57:05,153 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 14:57:05,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 14:57:05,154 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 14:57:05,154 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 14:57:05,154 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 14:57:05,154 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 14:57:05,154 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 14:57:05,154 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 14:57:05,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 14:57:05,154 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 14:57:05,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 14:57:05,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 14:57:05,155 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 14:57:05,155 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 14:57:05,155 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 14:57:05,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 14:57:05,155 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 14:57:05,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 14:57:05,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 14:57:05,155 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 14:57:05,155 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 14:57:05,155 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 14:57:05,155 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 -> dda0b992ac1600896503297d86377b482d0a82ded923ea00c7e9ff3fed4db7e7 [2025-02-05 14:57:05,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 14:57:05,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 14:57:05,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 14:57:05,380 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 14:57:05,380 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 14:57:05,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/watermelon.c [2025-02-05 14:57:06,517 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d8fad58f3/e091ebb999f04cc997e58559531d7fe7/FLAG2950905eb [2025-02-05 14:57:06,786 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 14:57:06,787 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/watermelon.c [2025-02-05 14:57:06,792 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d8fad58f3/e091ebb999f04cc997e58559531d7fe7/FLAG2950905eb [2025-02-05 14:57:07,104 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d8fad58f3/e091ebb999f04cc997e58559531d7fe7 [2025-02-05 14:57:07,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 14:57:07,107 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 14:57:07,108 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 14:57:07,108 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 14:57:07,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 14:57:07,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 02:57:07" (1/1) ... [2025-02-05 14:57:07,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178c604e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07, skipping insertion in model container [2025-02-05 14:57:07,116 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 02:57:07" (1/1) ... [2025-02-05 14:57:07,128 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 14:57:07,215 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/watermelon.c[373,386] [2025-02-05 14:57:07,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 14:57:07,237 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 14:57:07,244 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/watermelon.c[373,386] [2025-02-05 14:57:07,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 14:57:07,265 INFO L204 MainTranslator]: Completed translation [2025-02-05 14:57:07,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07 WrapperNode [2025-02-05 14:57:07,266 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 14:57:07,270 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 14:57:07,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 14:57:07,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 14:57:07,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07" (1/1) ... [2025-02-05 14:57:07,280 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07" (1/1) ... [2025-02-05 14:57:07,293 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2025-02-05 14:57:07,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 14:57:07,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 14:57:07,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 14:57:07,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 14:57:07,299 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07" (1/1) ... [2025-02-05 14:57:07,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07" (1/1) ... [2025-02-05 14:57:07,304 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07" (1/1) ... [2025-02-05 14:57:07,310 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]. [2025-02-05 14:57:07,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07" (1/1) ... [2025-02-05 14:57:07,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07" (1/1) ... [2025-02-05 14:57:07,316 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07" (1/1) ... [2025-02-05 14:57:07,316 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07" (1/1) ... [2025-02-05 14:57:07,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07" (1/1) ... [2025-02-05 14:57:07,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07" (1/1) ... [2025-02-05 14:57:07,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 14:57:07,321 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 14:57:07,321 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 14:57:07,321 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 14:57:07,322 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07" (1/1) ... [2025-02-05 14:57:07,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 14:57:07,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:07,353 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) [2025-02-05 14:57:07,364 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 [2025-02-05 14:57:07,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 14:57:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 14:57:07,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 14:57:07,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 14:57:07,425 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 14:57:07,427 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 14:57:07,517 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2025-02-05 14:57:07,520 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 14:57:07,526 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 14:57:07,526 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 14:57:07,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 02:57:07 BoogieIcfgContainer [2025-02-05 14:57:07,526 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 14:57:07,528 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 14:57:07,528 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 14:57:07,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 14:57:07,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 02:57:07" (1/3) ... [2025-02-05 14:57:07,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b000a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 02:57:07, skipping insertion in model container [2025-02-05 14:57:07,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:57:07" (2/3) ... [2025-02-05 14:57:07,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b000a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 02:57:07, skipping insertion in model container [2025-02-05 14:57:07,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 02:57:07" (3/3) ... [2025-02-05 14:57:07,532 INFO L128 eAbstractionObserver]: Analyzing ICFG watermelon.c [2025-02-05 14:57:07,541 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 14:57:07,542 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG watermelon.c that has 1 procedures, 23 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-05 14:57:07,570 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 14:57:07,578 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;@6d47ed43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 14:57:07,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 14:57:07,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 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) [2025-02-05 14:57:07,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-05 14:57:07,587 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:07,587 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:07,588 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:07,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:07,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1782860658, now seen corresponding path program 1 times [2025-02-05 14:57:07,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:07,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643660052] [2025-02-05 14:57:07,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:57:07,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:07,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-05 14:57:07,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-05 14:57:07,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:07,665 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:07,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:07,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:07,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643660052] [2025-02-05 14:57:07,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643660052] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 14:57:07,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 14:57:07,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-05 14:57:07,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060719207] [2025-02-05 14:57:07,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 14:57:07,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 14:57:07,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:07,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 14:57:07,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 14:57:07,988 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 22 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) Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2025-02-05 14:57:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:08,071 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2025-02-05 14:57:08,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 14:57:08,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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 [2025-02-05 14:57:08,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:08,077 INFO L225 Difference]: With dead ends: 43 [2025-02-05 14:57:08,078 INFO L226 Difference]: Without dead ends: 27 [2025-02-05 14:57:08,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-05 14:57:08,082 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:08,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 139 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:08,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-05 14:57:08,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2025-02-05 14:57:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 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) [2025-02-05 14:57:08,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2025-02-05 14:57:08,104 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 11 [2025-02-05 14:57:08,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:08,105 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2025-02-05 14:57:08,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2025-02-05 14:57:08,105 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2025-02-05 14:57:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-05 14:57:08,105 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:08,105 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:08,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 14:57:08,106 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:08,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:08,106 INFO L85 PathProgramCache]: Analyzing trace with hash 415768913, now seen corresponding path program 1 times [2025-02-05 14:57:08,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:08,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146582590] [2025-02-05 14:57:08,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:57:08,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:08,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-05 14:57:08,123 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 14:57:08,123 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:08,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:08,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:08,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146582590] [2025-02-05 14:57:08,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146582590] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 14:57:08,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 14:57:08,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 14:57:08,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346952930] [2025-02-05 14:57:08,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 14:57:08,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 14:57:08,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:08,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 14:57:08,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 14:57:08,152 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2025-02-05 14:57:08,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:08,169 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2025-02-05 14:57:08,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 14:57:08,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 [2025-02-05 14:57:08,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:08,170 INFO L225 Difference]: With dead ends: 34 [2025-02-05 14:57:08,170 INFO L226 Difference]: Without dead ends: 26 [2025-02-05 14:57:08,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 14:57:08,171 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:08,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:57:08,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-02-05 14:57:08,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2025-02-05 14:57:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.28) internal successors, (32), 25 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) [2025-02-05 14:57:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2025-02-05 14:57:08,176 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2025-02-05 14:57:08,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:08,176 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2025-02-05 14:57:08,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2025-02-05 14:57:08,176 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2025-02-05 14:57:08,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-05 14:57:08,177 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:08,177 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:08,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 14:57:08,177 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:08,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:08,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1422152975, now seen corresponding path program 1 times [2025-02-05 14:57:08,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:08,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483866144] [2025-02-05 14:57:08,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:57:08,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:08,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-05 14:57:08,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 14:57:08,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:08,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:08,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:08,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483866144] [2025-02-05 14:57:08,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483866144] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 14:57:08,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 14:57:08,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 14:57:08,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4028441] [2025-02-05 14:57:08,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 14:57:08,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 14:57:08,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:08,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 14:57:08,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 14:57:08,258 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2025-02-05 14:57:08,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:08,268 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2025-02-05 14:57:08,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 14:57:08,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 [2025-02-05 14:57:08,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:08,269 INFO L225 Difference]: With dead ends: 48 [2025-02-05 14:57:08,269 INFO L226 Difference]: Without dead ends: 27 [2025-02-05 14:57:08,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 14:57:08,270 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:08,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:57:08,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-05 14:57:08,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-02-05 14:57:08,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 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) [2025-02-05 14:57:08,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2025-02-05 14:57:08,272 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 14 [2025-02-05 14:57:08,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:08,272 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2025-02-05 14:57:08,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2025-02-05 14:57:08,272 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2025-02-05 14:57:08,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-05 14:57:08,273 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:08,273 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:08,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 14:57:08,273 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:08,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:08,273 INFO L85 PathProgramCache]: Analyzing trace with hash 95298327, now seen corresponding path program 1 times [2025-02-05 14:57:08,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:08,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142689623] [2025-02-05 14:57:08,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:57:08,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:08,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 14:57:08,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 14:57:08,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:08,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:08,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:08,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142689623] [2025-02-05 14:57:08,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142689623] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:08,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419606566] [2025-02-05 14:57:08,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:57:08,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:08,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:08,346 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) [2025-02-05 14:57:08,354 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 [2025-02-05 14:57:08,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 14:57:08,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 14:57:08,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:08,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:08,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 14:57:08,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 14:57:08,555 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 14:57:08,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419606566] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 14:57:08,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 14:57:08,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-02-05 14:57:08,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627709293] [2025-02-05 14:57:08,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 14:57:08,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 14:57:08,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:08,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 14:57:08,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-05 14:57:08,556 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-02-05 14:57:08,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:08,587 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2025-02-05 14:57:08,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 14:57:08,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2025-02-05 14:57:08,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:08,588 INFO L225 Difference]: With dead ends: 39 [2025-02-05 14:57:08,588 INFO L226 Difference]: Without dead ends: 27 [2025-02-05 14:57:08,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-05 14:57:08,589 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:08,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:57:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-05 14:57:08,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-02-05 14:57:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 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) [2025-02-05 14:57:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2025-02-05 14:57:08,597 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 15 [2025-02-05 14:57:08,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:08,597 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2025-02-05 14:57:08,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-02-05 14:57:08,597 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2025-02-05 14:57:08,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-05 14:57:08,597 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:08,597 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:08,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 14:57:08,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:08,798 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:08,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:08,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2113963309, now seen corresponding path program 1 times [2025-02-05 14:57:08,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:08,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84179775] [2025-02-05 14:57:08,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:57:08,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:08,809 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 14:57:08,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 14:57:08,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:08,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:08,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:08,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:08,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84179775] [2025-02-05 14:57:08,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84179775] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:08,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807797645] [2025-02-05 14:57:08,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:57:08,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:08,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:08,858 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) [2025-02-05 14:57:08,859 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 [2025-02-05 14:57:08,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 14:57:08,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 14:57:08,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:08,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:08,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 14:57:08,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:08,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:08,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807797645] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:08,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:08,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-02-05 14:57:08,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110485572] [2025-02-05 14:57:08,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:08,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 14:57:08,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:08,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 14:57:08,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-02-05 14:57:08,933 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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) [2025-02-05 14:57:08,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:08,944 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2025-02-05 14:57:08,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 14:57:08,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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) Word has length 15 [2025-02-05 14:57:08,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:08,944 INFO L225 Difference]: With dead ends: 49 [2025-02-05 14:57:08,944 INFO L226 Difference]: Without dead ends: 28 [2025-02-05 14:57:08,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-02-05 14:57:08,945 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:08,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:57:08,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-02-05 14:57:08,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-02-05 14:57:08,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 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) [2025-02-05 14:57:08,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2025-02-05 14:57:08,948 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 15 [2025-02-05 14:57:08,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:08,948 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2025-02-05 14:57:08,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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) [2025-02-05 14:57:08,949 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2025-02-05 14:57:08,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-05 14:57:08,949 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:08,949 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:08,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 14:57:09,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:09,150 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:09,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:09,150 INFO L85 PathProgramCache]: Analyzing trace with hash 64418417, now seen corresponding path program 2 times [2025-02-05 14:57:09,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:09,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464287718] [2025-02-05 14:57:09,151 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:57:09,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:09,158 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-05 14:57:09,162 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 16 statements. [2025-02-05 14:57:09,162 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-05 14:57:09,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 14:57:09,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:09,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464287718] [2025-02-05 14:57:09,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464287718] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 14:57:09,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 14:57:09,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 14:57:09,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845031442] [2025-02-05 14:57:09,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 14:57:09,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 14:57:09,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:09,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 14:57:09,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 14:57:09,273 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2025-02-05 14:57:09,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:09,303 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2025-02-05 14:57:09,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 14:57:09,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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 [2025-02-05 14:57:09,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:09,304 INFO L225 Difference]: With dead ends: 33 [2025-02-05 14:57:09,304 INFO L226 Difference]: Without dead ends: 28 [2025-02-05 14:57:09,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 14:57:09,304 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:09,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 41 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:57:09,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-02-05 14:57:09,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-02-05 14:57:09,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 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) [2025-02-05 14:57:09,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2025-02-05 14:57:09,311 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2025-02-05 14:57:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:09,311 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2025-02-05 14:57:09,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 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) [2025-02-05 14:57:09,311 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2025-02-05 14:57:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-05 14:57:09,311 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:09,311 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:09,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 14:57:09,311 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:09,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:09,312 INFO L85 PathProgramCache]: Analyzing trace with hash -922473451, now seen corresponding path program 1 times [2025-02-05 14:57:09,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:09,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470825912] [2025-02-05 14:57:09,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:57:09,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:09,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-05 14:57:09,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-05 14:57:09,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:09,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:09,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 14:57:09,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:09,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470825912] [2025-02-05 14:57:09,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470825912] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:09,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208594993] [2025-02-05 14:57:09,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:57:09,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:09,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:09,364 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) [2025-02-05 14:57:09,365 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 [2025-02-05 14:57:09,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-05 14:57:09,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-05 14:57:09,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:09,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:09,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 14:57:09,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 14:57:09,415 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 14:57:09,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208594993] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:09,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:09,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2025-02-05 14:57:09,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179014618] [2025-02-05 14:57:09,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:09,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 14:57:09,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:09,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 14:57:09,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-05 14:57:09,433 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 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) [2025-02-05 14:57:09,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:09,463 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2025-02-05 14:57:09,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 14:57:09,463 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 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 20 [2025-02-05 14:57:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:09,464 INFO L225 Difference]: With dead ends: 46 [2025-02-05 14:57:09,464 INFO L226 Difference]: Without dead ends: 32 [2025-02-05 14:57:09,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-05 14:57:09,464 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:09,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:57:09,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-05 14:57:09,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2025-02-05 14:57:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 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) [2025-02-05 14:57:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2025-02-05 14:57:09,468 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 20 [2025-02-05 14:57:09,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:09,468 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2025-02-05 14:57:09,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 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) [2025-02-05 14:57:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2025-02-05 14:57:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-05 14:57:09,469 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:09,469 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:09,476 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 [2025-02-05 14:57:09,669 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 [2025-02-05 14:57:09,670 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:09,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:09,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1025270227, now seen corresponding path program 1 times [2025-02-05 14:57:09,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:09,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865859561] [2025-02-05 14:57:09,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:57:09,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:09,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-05 14:57:09,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-05 14:57:09,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:09,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:09,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 14:57:09,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:09,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865859561] [2025-02-05 14:57:09,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865859561] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:09,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103518465] [2025-02-05 14:57:09,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:57:09,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:09,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:09,760 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) [2025-02-05 14:57:09,761 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 [2025-02-05 14:57:09,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-05 14:57:09,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-05 14:57:09,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:09,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:09,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 14:57:09,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 14:57:09,835 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 14:57:09,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103518465] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:09,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:09,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2025-02-05 14:57:09,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092486972] [2025-02-05 14:57:09,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:09,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 14:57:09,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:09,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 14:57:09,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-02-05 14:57:09,860 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 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) [2025-02-05 14:57:09,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:09,881 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2025-02-05 14:57:09,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 14:57:09,881 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 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 21 [2025-02-05 14:57:09,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:09,882 INFO L225 Difference]: With dead ends: 42 [2025-02-05 14:57:09,882 INFO L226 Difference]: Without dead ends: 36 [2025-02-05 14:57:09,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-02-05 14:57:09,883 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:09,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:57:09,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-05 14:57:09,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2025-02-05 14:57:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 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) [2025-02-05 14:57:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2025-02-05 14:57:09,889 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 21 [2025-02-05 14:57:09,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:09,889 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2025-02-05 14:57:09,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 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) [2025-02-05 14:57:09,889 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2025-02-05 14:57:09,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-05 14:57:09,890 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:09,890 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:09,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 14:57:10,090 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 [2025-02-05 14:57:10,091 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:10,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:10,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1053899378, now seen corresponding path program 1 times [2025-02-05 14:57:10,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:10,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829742302] [2025-02-05 14:57:10,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:57:10,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:10,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-05 14:57:10,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-05 14:57:10,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:10,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 14:57:10,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:10,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829742302] [2025-02-05 14:57:10,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829742302] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 14:57:10,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 14:57:10,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 14:57:10,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625404896] [2025-02-05 14:57:10,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 14:57:10,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 14:57:10,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:10,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 14:57:10,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 14:57:10,184 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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) [2025-02-05 14:57:10,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:10,207 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2025-02-05 14:57:10,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 14:57:10,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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) Word has length 21 [2025-02-05 14:57:10,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:10,208 INFO L225 Difference]: With dead ends: 40 [2025-02-05 14:57:10,208 INFO L226 Difference]: Without dead ends: 33 [2025-02-05 14:57:10,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 14:57:10,209 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:10,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:57:10,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-02-05 14:57:10,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2025-02-05 14:57:10,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 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) [2025-02-05 14:57:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2025-02-05 14:57:10,214 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 21 [2025-02-05 14:57:10,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:10,215 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2025-02-05 14:57:10,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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) [2025-02-05 14:57:10,215 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2025-02-05 14:57:10,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-05 14:57:10,216 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:10,216 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:10,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-05 14:57:10,216 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:10,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1096033513, now seen corresponding path program 2 times [2025-02-05 14:57:10,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:10,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442132009] [2025-02-05 14:57:10,216 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:57:10,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:10,226 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-05 14:57:10,233 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 14:57:10,233 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:57:10,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:10,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:10,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442132009] [2025-02-05 14:57:10,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442132009] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:10,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841244957] [2025-02-05 14:57:10,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:57:10,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:10,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:10,466 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) [2025-02-05 14:57:10,467 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 [2025-02-05 14:57:10,494 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-05 14:57:10,504 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 14:57:10,504 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:57:10,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:10,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 14:57:10,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:10,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:10,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:10,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841244957] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:10,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:10,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2025-02-05 14:57:10,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842207570] [2025-02-05 14:57:10,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:10,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-05 14:57:10,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:10,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-05 14:57:10,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=431, Unknown=0, NotChecked=0, Total=552 [2025-02-05 14:57:10,843 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 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) [2025-02-05 14:57:10,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:10,943 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2025-02-05 14:57:10,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 14:57:10,943 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 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 [2025-02-05 14:57:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:10,944 INFO L225 Difference]: With dead ends: 50 [2025-02-05 14:57:10,944 INFO L226 Difference]: Without dead ends: 43 [2025-02-05 14:57:10,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2025-02-05 14:57:10,944 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:10,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:10,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-02-05 14:57:10,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2025-02-05 14:57:10,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 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) [2025-02-05 14:57:10,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2025-02-05 14:57:10,949 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 22 [2025-02-05 14:57:10,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:10,950 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2025-02-05 14:57:10,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 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) [2025-02-05 14:57:10,950 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2025-02-05 14:57:10,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-05 14:57:10,950 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:10,950 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:10,956 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 [2025-02-05 14:57:11,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-05 14:57:11,152 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:11,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:11,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1626122889, now seen corresponding path program 2 times [2025-02-05 14:57:11,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:11,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667253810] [2025-02-05 14:57:11,153 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:57:11,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:11,156 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-05 14:57:11,163 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 14:57:11,163 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:57:11,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:11,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:11,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667253810] [2025-02-05 14:57:11,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667253810] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:11,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434359626] [2025-02-05 14:57:11,386 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:57:11,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:11,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:11,388 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) [2025-02-05 14:57:11,390 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 [2025-02-05 14:57:11,413 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-05 14:57:11,422 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 14:57:11,423 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:57:11,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:11,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 14:57:11,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:11,621 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:11,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434359626] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:11,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:11,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2025-02-05 14:57:11,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006063620] [2025-02-05 14:57:11,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:11,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-05 14:57:11,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:11,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-05 14:57:11,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2025-02-05 14:57:11,767 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 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) [2025-02-05 14:57:11,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:11,857 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2025-02-05 14:57:11,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-05 14:57:11,857 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 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 [2025-02-05 14:57:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:11,858 INFO L225 Difference]: With dead ends: 49 [2025-02-05 14:57:11,858 INFO L226 Difference]: Without dead ends: 33 [2025-02-05 14:57:11,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2025-02-05 14:57:11,858 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:11,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 90 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-02-05 14:57:11,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2025-02-05 14:57:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 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) [2025-02-05 14:57:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2025-02-05 14:57:11,861 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 22 [2025-02-05 14:57:11,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:11,861 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2025-02-05 14:57:11,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 24 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) [2025-02-05 14:57:11,861 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2025-02-05 14:57:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-05 14:57:11,861 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:11,861 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:11,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 14:57:12,062 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,SelfDestructingSolverStorable10 [2025-02-05 14:57:12,062 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:12,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:12,062 INFO L85 PathProgramCache]: Analyzing trace with hash 474063377, now seen corresponding path program 3 times [2025-02-05 14:57:12,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:12,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68507913] [2025-02-05 14:57:12,062 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:57:12,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:12,066 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 3 equivalence classes. [2025-02-05 14:57:12,069 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-02-05 14:57:12,070 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 14:57:12,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:12,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:12,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68507913] [2025-02-05 14:57:12,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68507913] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:12,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561091802] [2025-02-05 14:57:12,340 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:57:12,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:12,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:12,344 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) [2025-02-05 14:57:12,346 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 [2025-02-05 14:57:12,374 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 3 equivalence classes. [2025-02-05 14:57:12,384 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-02-05 14:57:12,384 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 14:57:12,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:12,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 14:57:12,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:12,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:12,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561091802] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:12,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:12,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 31 [2025-02-05 14:57:12,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214294139] [2025-02-05 14:57:12,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:12,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-05 14:57:12,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:12,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-05 14:57:12,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2025-02-05 14:57:12,928 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 31 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 31 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) [2025-02-05 14:57:13,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:13,073 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2025-02-05 14:57:13,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 14:57:13,073 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 31 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 23 [2025-02-05 14:57:13,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:13,074 INFO L225 Difference]: With dead ends: 52 [2025-02-05 14:57:13,074 INFO L226 Difference]: Without dead ends: 35 [2025-02-05 14:57:13,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=199, Invalid=857, Unknown=0, NotChecked=0, Total=1056 [2025-02-05 14:57:13,075 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:13,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 68 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:13,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-02-05 14:57:13,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2025-02-05 14:57:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 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) [2025-02-05 14:57:13,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2025-02-05 14:57:13,079 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 23 [2025-02-05 14:57:13,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:13,079 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2025-02-05 14:57:13,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 31 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) [2025-02-05 14:57:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2025-02-05 14:57:13,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-05 14:57:13,079 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:13,079 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:13,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-05 14:57:13,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:13,280 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:13,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:13,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1952986035, now seen corresponding path program 3 times [2025-02-05 14:57:13,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:13,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069998595] [2025-02-05 14:57:13,280 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:57:13,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:13,284 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 3 equivalence classes. [2025-02-05 14:57:13,288 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-02-05 14:57:13,288 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 14:57:13,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:13,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:13,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069998595] [2025-02-05 14:57:13,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069998595] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:13,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284172514] [2025-02-05 14:57:13,557 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:57:13,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:13,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:13,559 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) [2025-02-05 14:57:13,560 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 [2025-02-05 14:57:13,591 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 23 statements into 3 equivalence classes. [2025-02-05 14:57:13,601 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-02-05 14:57:13,601 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 14:57:13,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:13,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 14:57:13,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:13,814 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:13,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:13,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284172514] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:13,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:13,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 30 [2025-02-05 14:57:13,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795281142] [2025-02-05 14:57:13,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:13,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-05 14:57:13,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:13,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-05 14:57:13,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2025-02-05 14:57:13,998 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 30 states, 30 states have (on average 1.5) internal successors, (45), 30 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) [2025-02-05 14:57:14,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:14,109 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2025-02-05 14:57:14,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 14:57:14,110 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.5) internal successors, (45), 30 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 23 [2025-02-05 14:57:14,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:14,110 INFO L225 Difference]: With dead ends: 45 [2025-02-05 14:57:14,110 INFO L226 Difference]: Without dead ends: 38 [2025-02-05 14:57:14,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2025-02-05 14:57:14,111 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:14,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:14,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-02-05 14:57:14,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2025-02-05 14:57:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 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) [2025-02-05 14:57:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2025-02-05 14:57:14,114 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 23 [2025-02-05 14:57:14,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:14,114 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2025-02-05 14:57:14,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.5) internal successors, (45), 30 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) [2025-02-05 14:57:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2025-02-05 14:57:14,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 14:57:14,115 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:14,115 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:14,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 14:57:14,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:14,323 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:14,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:14,324 INFO L85 PathProgramCache]: Analyzing trace with hash -242709675, now seen corresponding path program 4 times [2025-02-05 14:57:14,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:14,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391148325] [2025-02-05 14:57:14,324 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:57:14,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:14,327 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-02-05 14:57:14,330 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 14:57:14,330 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:57:14,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:14,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:14,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391148325] [2025-02-05 14:57:14,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391148325] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:14,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588968814] [2025-02-05 14:57:14,495 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:57:14,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:14,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:14,499 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) [2025-02-05 14:57:14,502 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 [2025-02-05 14:57:14,528 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-02-05 14:57:14,537 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 14:57:14,537 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:57:14,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:14,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-05 14:57:14,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:14,747 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:14,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588968814] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:14,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:14,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2025-02-05 14:57:14,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009824606] [2025-02-05 14:57:14,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:14,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-05 14:57:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:14,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-05 14:57:14,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2025-02-05 14:57:14,954 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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) [2025-02-05 14:57:15,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:15,078 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2025-02-05 14:57:15,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-05 14:57:15,078 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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 [2025-02-05 14:57:15,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:15,079 INFO L225 Difference]: With dead ends: 54 [2025-02-05 14:57:15,079 INFO L226 Difference]: Without dead ends: 47 [2025-02-05 14:57:15,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2025-02-05 14:57:15,083 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:15,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 133 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:15,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-02-05 14:57:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2025-02-05 14:57:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 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) [2025-02-05 14:57:15,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2025-02-05 14:57:15,086 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 24 [2025-02-05 14:57:15,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:15,086 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2025-02-05 14:57:15,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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) [2025-02-05 14:57:15,086 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2025-02-05 14:57:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 14:57:15,087 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:15,087 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:15,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-05 14:57:15,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:15,288 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:15,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:15,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1363263383, now seen corresponding path program 4 times [2025-02-05 14:57:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:15,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659263280] [2025-02-05 14:57:15,288 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:57:15,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:15,294 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-02-05 14:57:15,297 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 14:57:15,297 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:57:15,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:15,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:15,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659263280] [2025-02-05 14:57:15,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659263280] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:15,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591922389] [2025-02-05 14:57:15,490 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:57:15,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:15,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:15,492 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) [2025-02-05 14:57:15,494 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 [2025-02-05 14:57:15,516 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-02-05 14:57:15,524 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 14:57:15,524 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:57:15,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:15,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-05 14:57:15,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:15,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:15,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:15,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591922389] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:15,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:15,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2025-02-05 14:57:15,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917176510] [2025-02-05 14:57:15,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:15,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-05 14:57:15,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:15,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-05 14:57:15,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2025-02-05 14:57:15,882 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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) [2025-02-05 14:57:15,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:15,965 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2025-02-05 14:57:15,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 14:57:15,965 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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 [2025-02-05 14:57:15,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:15,966 INFO L225 Difference]: With dead ends: 53 [2025-02-05 14:57:15,966 INFO L226 Difference]: Without dead ends: 36 [2025-02-05 14:57:15,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2025-02-05 14:57:15,967 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:15,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 83 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:15,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-05 14:57:15,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-02-05 14:57:15,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 35 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) [2025-02-05 14:57:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2025-02-05 14:57:15,971 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 24 [2025-02-05 14:57:15,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:15,971 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2025-02-05 14:57:15,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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) [2025-02-05 14:57:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2025-02-05 14:57:15,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-05 14:57:15,972 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:15,972 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:15,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 14:57:16,172 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,SelfDestructingSolverStorable14 [2025-02-05 14:57:16,173 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:16,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:16,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1157298579, now seen corresponding path program 5 times [2025-02-05 14:57:16,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:16,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830111328] [2025-02-05 14:57:16,174 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:57:16,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:16,177 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 3 equivalence classes. [2025-02-05 14:57:16,180 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 14:57:16,180 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-05 14:57:16,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:16,397 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:16,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:16,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830111328] [2025-02-05 14:57:16,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830111328] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:16,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663926962] [2025-02-05 14:57:16,397 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:57:16,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:16,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:16,400 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) [2025-02-05 14:57:16,402 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 [2025-02-05 14:57:16,429 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 3 equivalence classes. [2025-02-05 14:57:16,438 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 14:57:16,438 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-05 14:57:16,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:16,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-05 14:57:16,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:16,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:16,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663926962] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:16,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:16,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2025-02-05 14:57:16,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283999349] [2025-02-05 14:57:16,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:16,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-05 14:57:16,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:16,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-05 14:57:16,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=913, Unknown=0, NotChecked=0, Total=1122 [2025-02-05 14:57:16,962 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 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) [2025-02-05 14:57:17,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:17,081 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2025-02-05 14:57:17,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-05 14:57:17,081 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 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 25 [2025-02-05 14:57:17,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:17,081 INFO L225 Difference]: With dead ends: 56 [2025-02-05 14:57:17,082 INFO L226 Difference]: Without dead ends: 38 [2025-02-05 14:57:17,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=913, Unknown=0, NotChecked=0, Total=1122 [2025-02-05 14:57:17,082 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:17,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 124 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:17,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-02-05 14:57:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-02-05 14:57:17,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 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) [2025-02-05 14:57:17,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2025-02-05 14:57:17,086 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 25 [2025-02-05 14:57:17,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:17,086 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2025-02-05 14:57:17,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 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) [2025-02-05 14:57:17,086 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2025-02-05 14:57:17,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-05 14:57:17,086 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:17,086 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:17,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 14:57:17,291 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,SelfDestructingSolverStorable15 [2025-02-05 14:57:17,291 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:17,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:17,292 INFO L85 PathProgramCache]: Analyzing trace with hash 618135251, now seen corresponding path program 5 times [2025-02-05 14:57:17,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:17,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642293133] [2025-02-05 14:57:17,292 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:57:17,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:17,294 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 3 equivalence classes. [2025-02-05 14:57:17,303 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 14:57:17,304 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-05 14:57:17,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:17,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:17,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642293133] [2025-02-05 14:57:17,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642293133] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:17,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006918158] [2025-02-05 14:57:17,565 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:57:17,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:17,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:17,570 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) [2025-02-05 14:57:17,576 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 [2025-02-05 14:57:17,603 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 3 equivalence classes. [2025-02-05 14:57:17,615 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 14:57:17,615 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-05 14:57:17,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:17,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-05 14:57:17,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:17,865 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:18,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006918158] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:18,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:18,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 34 [2025-02-05 14:57:18,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001825620] [2025-02-05 14:57:18,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:18,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-05 14:57:18,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:18,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-05 14:57:18,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2025-02-05 14:57:18,048 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 34 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 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) [2025-02-05 14:57:18,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:18,186 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2025-02-05 14:57:18,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-05 14:57:18,190 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 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 [2025-02-05 14:57:18,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:18,190 INFO L225 Difference]: With dead ends: 48 [2025-02-05 14:57:18,190 INFO L226 Difference]: Without dead ends: 41 [2025-02-05 14:57:18,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=950, Unknown=0, NotChecked=0, Total=1190 [2025-02-05 14:57:18,191 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:18,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 112 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:18,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-05 14:57:18,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2025-02-05 14:57:18,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 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) [2025-02-05 14:57:18,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2025-02-05 14:57:18,196 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 25 [2025-02-05 14:57:18,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:18,196 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2025-02-05 14:57:18,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 states have internal predecessors, (48), 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) [2025-02-05 14:57:18,196 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2025-02-05 14:57:18,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-05 14:57:18,196 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:18,196 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:18,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-05 14:57:18,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-05 14:57:18,402 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:18,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:18,403 INFO L85 PathProgramCache]: Analyzing trace with hash -466837033, now seen corresponding path program 6 times [2025-02-05 14:57:18,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:18,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241222546] [2025-02-05 14:57:18,403 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:57:18,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:18,406 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 4 equivalence classes. [2025-02-05 14:57:18,415 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 14:57:18,416 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-05 14:57:18,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:18,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:18,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241222546] [2025-02-05 14:57:18,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241222546] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:18,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568553680] [2025-02-05 14:57:18,681 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:57:18,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:18,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:18,683 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) [2025-02-05 14:57:18,687 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 [2025-02-05 14:57:18,710 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 4 equivalence classes. [2025-02-05 14:57:18,720 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 14:57:18,720 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-05 14:57:18,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:18,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-05 14:57:18,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:18,932 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:19,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568553680] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:19,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:19,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2025-02-05 14:57:19,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298741416] [2025-02-05 14:57:19,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:19,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-05 14:57:19,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:19,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-05 14:57:19,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2025-02-05 14:57:19,123 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 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) [2025-02-05 14:57:19,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:19,257 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2025-02-05 14:57:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-05 14:57:19,258 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 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 [2025-02-05 14:57:19,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:19,258 INFO L225 Difference]: With dead ends: 58 [2025-02-05 14:57:19,258 INFO L226 Difference]: Without dead ends: 51 [2025-02-05 14:57:19,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=251, Invalid=939, Unknown=0, NotChecked=0, Total=1190 [2025-02-05 14:57:19,259 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:19,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 156 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:19,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-02-05 14:57:19,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 40. [2025-02-05 14:57:19,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 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) [2025-02-05 14:57:19,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2025-02-05 14:57:19,262 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 26 [2025-02-05 14:57:19,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:19,263 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2025-02-05 14:57:19,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 34 states have internal predecessors, (50), 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) [2025-02-05 14:57:19,263 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2025-02-05 14:57:19,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-05 14:57:19,263 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:19,263 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:19,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-05 14:57:19,463 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,SelfDestructingSolverStorable17 [2025-02-05 14:57:19,464 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:19,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:19,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1362405257, now seen corresponding path program 6 times [2025-02-05 14:57:19,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:19,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020729520] [2025-02-05 14:57:19,464 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:57:19,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:19,468 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 4 equivalence classes. [2025-02-05 14:57:19,471 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 14:57:19,471 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-05 14:57:19,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:19,715 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:19,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:19,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020729520] [2025-02-05 14:57:19,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020729520] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:19,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813431423] [2025-02-05 14:57:19,715 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:57:19,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:19,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:19,717 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) [2025-02-05 14:57:19,719 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 [2025-02-05 14:57:19,743 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 26 statements into 4 equivalence classes. [2025-02-05 14:57:19,753 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 14:57:19,754 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-05 14:57:19,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:19,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-05 14:57:19,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:19,990 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:19,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:20,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813431423] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:20,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:20,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2025-02-05 14:57:20,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808730262] [2025-02-05 14:57:20,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:20,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-05 14:57:20,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:20,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-05 14:57:20,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=896, Unknown=0, NotChecked=0, Total=1122 [2025-02-05 14:57:20,181 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 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) [2025-02-05 14:57:20,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:20,270 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2025-02-05 14:57:20,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-05 14:57:20,270 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 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 [2025-02-05 14:57:20,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:20,271 INFO L225 Difference]: With dead ends: 57 [2025-02-05 14:57:20,271 INFO L226 Difference]: Without dead ends: 39 [2025-02-05 14:57:20,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=950, Unknown=0, NotChecked=0, Total=1190 [2025-02-05 14:57:20,272 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:20,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 70 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-02-05 14:57:20,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2025-02-05 14:57:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 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) [2025-02-05 14:57:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2025-02-05 14:57:20,275 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 26 [2025-02-05 14:57:20,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:20,276 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2025-02-05 14:57:20,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.4411764705882353) internal successors, (49), 34 states have internal predecessors, (49), 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) [2025-02-05 14:57:20,276 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2025-02-05 14:57:20,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-05 14:57:20,276 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:20,276 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:20,282 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 [2025-02-05 14:57:20,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:20,477 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:20,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:20,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1495682223, now seen corresponding path program 7 times [2025-02-05 14:57:20,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:20,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118888019] [2025-02-05 14:57:20,477 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:57:20,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:20,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-05 14:57:20,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-05 14:57:20,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:20,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:20,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:20,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118888019] [2025-02-05 14:57:20,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118888019] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:20,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201900019] [2025-02-05 14:57:20,799 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:57:20,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:20,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:20,801 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) [2025-02-05 14:57:20,803 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 [2025-02-05 14:57:20,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-05 14:57:20,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-05 14:57:20,837 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:20,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:20,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-05 14:57:20,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:21,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:21,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201900019] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:21,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:21,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2025-02-05 14:57:21,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429133938] [2025-02-05 14:57:21,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:21,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-05 14:57:21,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:21,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-05 14:57:21,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2025-02-05 14:57:21,428 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 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) [2025-02-05 14:57:21,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:21,597 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2025-02-05 14:57:21,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-05 14:57:21,597 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 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 [2025-02-05 14:57:21,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:21,598 INFO L225 Difference]: With dead ends: 60 [2025-02-05 14:57:21,598 INFO L226 Difference]: Without dead ends: 41 [2025-02-05 14:57:21,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2025-02-05 14:57:21,599 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:21,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 93 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:21,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-05 14:57:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2025-02-05 14:57:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 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) [2025-02-05 14:57:21,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2025-02-05 14:57:21,616 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 27 [2025-02-05 14:57:21,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:21,616 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2025-02-05 14:57:21,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 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) [2025-02-05 14:57:21,616 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2025-02-05 14:57:21,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-05 14:57:21,616 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:21,616 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:21,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-05 14:57:21,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:21,817 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:21,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:21,819 INFO L85 PathProgramCache]: Analyzing trace with hash -171001677, now seen corresponding path program 7 times [2025-02-05 14:57:21,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:21,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271566108] [2025-02-05 14:57:21,819 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:57:21,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:21,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-05 14:57:21,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-05 14:57:21,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:21,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:22,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:22,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271566108] [2025-02-05 14:57:22,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271566108] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:22,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548334813] [2025-02-05 14:57:22,101 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:57:22,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:22,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:22,103 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) [2025-02-05 14:57:22,105 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 [2025-02-05 14:57:22,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-05 14:57:22,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-05 14:57:22,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:22,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:22,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-05 14:57:22,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:22,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:22,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548334813] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:22,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:22,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2025-02-05 14:57:22,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392422603] [2025-02-05 14:57:22,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:22,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-05 14:57:22,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:22,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-05 14:57:22,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1265, Unknown=0, NotChecked=0, Total=1560 [2025-02-05 14:57:22,651 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 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) [2025-02-05 14:57:22,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:22,786 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2025-02-05 14:57:22,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-05 14:57:22,787 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 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 [2025-02-05 14:57:22,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:22,787 INFO L225 Difference]: With dead ends: 51 [2025-02-05 14:57:22,787 INFO L226 Difference]: Without dead ends: 44 [2025-02-05 14:57:22,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=318, Invalid=1322, Unknown=0, NotChecked=0, Total=1640 [2025-02-05 14:57:22,789 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:22,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 104 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:22,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-05 14:57:22,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2025-02-05 14:57:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 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) [2025-02-05 14:57:22,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2025-02-05 14:57:22,796 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 27 [2025-02-05 14:57:22,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:22,796 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2025-02-05 14:57:22,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.375) internal successors, (55), 40 states have internal predecessors, (55), 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) [2025-02-05 14:57:22,796 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2025-02-05 14:57:22,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-05 14:57:22,797 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:22,797 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:22,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-05 14:57:22,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:22,998 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:22,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:22,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1078090389, now seen corresponding path program 8 times [2025-02-05 14:57:22,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:22,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742671421] [2025-02-05 14:57:22,998 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:57:22,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:23,001 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-05 14:57:23,004 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 14:57:23,005 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:57:23,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:23,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:23,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742671421] [2025-02-05 14:57:23,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742671421] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:23,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029142809] [2025-02-05 14:57:23,349 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:57:23,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:23,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:23,352 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) [2025-02-05 14:57:23,353 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 [2025-02-05 14:57:23,380 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-05 14:57:23,390 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 14:57:23,391 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:57:23,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:23,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-05 14:57:23,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:23,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:23,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029142809] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:23,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:23,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 39 [2025-02-05 14:57:23,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217023613] [2025-02-05 14:57:23,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:23,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-02-05 14:57:23,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:23,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-02-05 14:57:23,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1184, Unknown=0, NotChecked=0, Total=1482 [2025-02-05 14:57:23,928 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 39 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 39 states have internal predecessors, (55), 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) [2025-02-05 14:57:24,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:24,067 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2025-02-05 14:57:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-05 14:57:24,067 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 39 states have internal predecessors, (55), 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 [2025-02-05 14:57:24,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:24,067 INFO L225 Difference]: With dead ends: 62 [2025-02-05 14:57:24,067 INFO L226 Difference]: Without dead ends: 55 [2025-02-05 14:57:24,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=322, Invalid=1238, Unknown=0, NotChecked=0, Total=1560 [2025-02-05 14:57:24,069 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:24,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 141 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:24,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-05 14:57:24,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2025-02-05 14:57:24,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 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) [2025-02-05 14:57:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2025-02-05 14:57:24,073 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 28 [2025-02-05 14:57:24,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:24,073 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2025-02-05 14:57:24,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 39 states have internal predecessors, (55), 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) [2025-02-05 14:57:24,073 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2025-02-05 14:57:24,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-05 14:57:24,073 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:24,073 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:24,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-05 14:57:24,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:24,277 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:24,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:24,277 INFO L85 PathProgramCache]: Analyzing trace with hash -55846249, now seen corresponding path program 8 times [2025-02-05 14:57:24,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:24,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217560866] [2025-02-05 14:57:24,278 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:57:24,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:24,280 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-05 14:57:24,282 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 14:57:24,282 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:57:24,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:24,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:24,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217560866] [2025-02-05 14:57:24,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217560866] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:24,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671244651] [2025-02-05 14:57:24,545 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:57:24,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:24,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:24,547 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) [2025-02-05 14:57:24,552 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 [2025-02-05 14:57:24,580 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-02-05 14:57:24,590 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 14:57:24,590 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:57:24,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:24,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-05 14:57:24,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:24,918 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:25,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671244651] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:25,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:25,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 39 [2025-02-05 14:57:25,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366724676] [2025-02-05 14:57:25,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:25,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-02-05 14:57:25,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:25,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-02-05 14:57:25,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1189, Unknown=0, NotChecked=0, Total=1482 [2025-02-05 14:57:25,141 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 39 states have internal predecessors, (54), 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) [2025-02-05 14:57:25,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:25,279 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2025-02-05 14:57:25,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-05 14:57:25,279 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 39 states have internal predecessors, (54), 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 [2025-02-05 14:57:25,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:25,279 INFO L225 Difference]: With dead ends: 61 [2025-02-05 14:57:25,279 INFO L226 Difference]: Without dead ends: 42 [2025-02-05 14:57:25,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=308, Invalid=1252, Unknown=0, NotChecked=0, Total=1560 [2025-02-05 14:57:25,280 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:25,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 145 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:25,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-02-05 14:57:25,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2025-02-05 14:57:25,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 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) [2025-02-05 14:57:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2025-02-05 14:57:25,284 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 28 [2025-02-05 14:57:25,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:25,284 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2025-02-05 14:57:25,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 39 states have internal predecessors, (54), 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) [2025-02-05 14:57:25,284 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2025-02-05 14:57:25,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-05 14:57:25,284 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:25,284 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:25,289 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 [2025-02-05 14:57:25,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:25,484 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:25,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash -847572397, now seen corresponding path program 9 times [2025-02-05 14:57:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:25,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891366946] [2025-02-05 14:57:25,485 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:57:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:25,489 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 4 equivalence classes. [2025-02-05 14:57:25,493 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 14:57:25,493 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 14:57:25,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:25,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:25,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891366946] [2025-02-05 14:57:25,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891366946] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:25,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698638569] [2025-02-05 14:57:25,798 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:57:25,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:25,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:25,801 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) [2025-02-05 14:57:25,802 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 [2025-02-05 14:57:25,830 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 4 equivalence classes. [2025-02-05 14:57:25,840 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 14:57:25,840 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 14:57:25,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:25,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-05 14:57:25,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:26,188 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:26,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:26,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698638569] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:26,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:26,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 46 [2025-02-05 14:57:26,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625905441] [2025-02-05 14:57:26,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:26,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-05 14:57:26,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:26,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-05 14:57:26,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1696, Unknown=0, NotChecked=0, Total=2070 [2025-02-05 14:57:26,496 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 46 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 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) [2025-02-05 14:57:26,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:26,678 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2025-02-05 14:57:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-05 14:57:26,678 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 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 [2025-02-05 14:57:26,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:26,678 INFO L225 Difference]: With dead ends: 64 [2025-02-05 14:57:26,678 INFO L226 Difference]: Without dead ends: 44 [2025-02-05 14:57:26,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 24 SyntacticMatches, 8 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1291 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=400, Invalid=1856, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 14:57:26,680 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:26,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 118 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:26,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-05 14:57:26,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2025-02-05 14:57:26,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 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) [2025-02-05 14:57:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2025-02-05 14:57:26,685 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 29 [2025-02-05 14:57:26,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:26,685 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2025-02-05 14:57:26,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 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) [2025-02-05 14:57:26,685 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2025-02-05 14:57:26,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-05 14:57:26,685 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:26,685 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:26,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-05 14:57:26,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:26,886 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:26,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:26,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1873273901, now seen corresponding path program 9 times [2025-02-05 14:57:26,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:26,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105214982] [2025-02-05 14:57:26,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:57:26,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:26,890 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 4 equivalence classes. [2025-02-05 14:57:26,893 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 14:57:26,893 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 14:57:26,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:27,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:27,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105214982] [2025-02-05 14:57:27,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105214982] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:27,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848324341] [2025-02-05 14:57:27,206 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:57:27,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:27,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:27,208 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) [2025-02-05 14:57:27,209 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 [2025-02-05 14:57:27,236 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 4 equivalence classes. [2025-02-05 14:57:27,247 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 29 of 29 statements. [2025-02-05 14:57:27,247 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 14:57:27,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:27,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-05 14:57:27,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:27,577 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:27,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848324341] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:27,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:27,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 45 [2025-02-05 14:57:27,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613985620] [2025-02-05 14:57:27,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:27,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-05 14:57:27,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:27,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-05 14:57:27,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1609, Unknown=0, NotChecked=0, Total=1980 [2025-02-05 14:57:27,861 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 45 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 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) [2025-02-05 14:57:27,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:27,994 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2025-02-05 14:57:27,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-05 14:57:27,994 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 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 [2025-02-05 14:57:27,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:27,995 INFO L225 Difference]: With dead ends: 54 [2025-02-05 14:57:27,995 INFO L226 Difference]: Without dead ends: 47 [2025-02-05 14:57:27,995 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 26 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=1673, Unknown=0, NotChecked=0, Total=2070 [2025-02-05 14:57:27,996 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:27,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 113 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:27,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-02-05 14:57:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2025-02-05 14:57:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 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) [2025-02-05 14:57:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2025-02-05 14:57:28,000 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 29 [2025-02-05 14:57:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:28,000 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2025-02-05 14:57:28,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 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) [2025-02-05 14:57:28,000 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2025-02-05 14:57:28,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-05 14:57:28,000 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:28,000 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:28,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-05 14:57:28,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:28,205 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:28,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:28,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1353254761, now seen corresponding path program 10 times [2025-02-05 14:57:28,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:28,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495233946] [2025-02-05 14:57:28,206 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:57:28,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:28,208 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-02-05 14:57:28,210 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-05 14:57:28,210 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:57:28,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:28,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:28,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495233946] [2025-02-05 14:57:28,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495233946] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:28,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626494880] [2025-02-05 14:57:28,467 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:57:28,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:28,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:28,468 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) [2025-02-05 14:57:28,469 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 [2025-02-05 14:57:28,500 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-02-05 14:57:28,509 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-05 14:57:28,509 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:57:28,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:28,510 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-05 14:57:28,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:28,835 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:28,835 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:29,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626494880] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:29,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:29,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 41 [2025-02-05 14:57:29,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805499101] [2025-02-05 14:57:29,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:29,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-05 14:57:29,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:29,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-05 14:57:29,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1314, Unknown=0, NotChecked=0, Total=1640 [2025-02-05 14:57:29,130 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 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) [2025-02-05 14:57:29,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:29,260 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2025-02-05 14:57:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-05 14:57:29,260 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 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 [2025-02-05 14:57:29,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:29,261 INFO L225 Difference]: With dead ends: 66 [2025-02-05 14:57:29,261 INFO L226 Difference]: Without dead ends: 59 [2025-02-05 14:57:29,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 29 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=352, Invalid=1370, Unknown=0, NotChecked=0, Total=1722 [2025-02-05 14:57:29,261 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:29,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 122 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-02-05 14:57:29,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2025-02-05 14:57:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 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) [2025-02-05 14:57:29,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2025-02-05 14:57:29,266 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 30 [2025-02-05 14:57:29,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:29,266 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2025-02-05 14:57:29,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 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) [2025-02-05 14:57:29,266 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2025-02-05 14:57:29,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-05 14:57:29,266 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:29,266 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:29,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-05 14:57:29,467 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,SelfDestructingSolverStorable25 [2025-02-05 14:57:29,467 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:29,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:29,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1286677641, now seen corresponding path program 10 times [2025-02-05 14:57:29,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:29,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825221881] [2025-02-05 14:57:29,467 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:57:29,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:29,470 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-02-05 14:57:29,472 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-05 14:57:29,472 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:57:29,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:29,719 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:29,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:29,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825221881] [2025-02-05 14:57:29,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825221881] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:29,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321464385] [2025-02-05 14:57:29,719 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:57:29,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:29,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:29,722 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) [2025-02-05 14:57:29,723 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 [2025-02-05 14:57:29,758 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-02-05 14:57:29,767 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-05 14:57:29,767 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:57:29,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:29,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-05 14:57:29,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:30,074 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:30,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:30,365 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:30,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321464385] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:30,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:30,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 41 [2025-02-05 14:57:30,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114920474] [2025-02-05 14:57:30,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:30,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-05 14:57:30,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:30,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-05 14:57:30,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1314, Unknown=0, NotChecked=0, Total=1640 [2025-02-05 14:57:30,367 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 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) [2025-02-05 14:57:30,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:30,462 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2025-02-05 14:57:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-05 14:57:30,462 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 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 [2025-02-05 14:57:30,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:30,462 INFO L225 Difference]: With dead ends: 65 [2025-02-05 14:57:30,462 INFO L226 Difference]: Without dead ends: 45 [2025-02-05 14:57:30,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 29 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=1382, Unknown=0, NotChecked=0, Total=1722 [2025-02-05 14:57:30,463 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:30,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:30,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-02-05 14:57:30,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2025-02-05 14:57:30,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 44 states have internal predecessors, (48), 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) [2025-02-05 14:57:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2025-02-05 14:57:30,468 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 30 [2025-02-05 14:57:30,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:30,468 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2025-02-05 14:57:30,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 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) [2025-02-05 14:57:30,468 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2025-02-05 14:57:30,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-05 14:57:30,468 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:30,468 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:30,474 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 [2025-02-05 14:57:30,672 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,SelfDestructingSolverStorable26 [2025-02-05 14:57:30,672 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:30,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:30,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1090139281, now seen corresponding path program 11 times [2025-02-05 14:57:30,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:30,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373661622] [2025-02-05 14:57:30,673 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:57:30,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:30,676 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 5 equivalence classes. [2025-02-05 14:57:30,679 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 14:57:30,679 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-05 14:57:30,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:31,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:31,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373661622] [2025-02-05 14:57:31,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373661622] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:31,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157588681] [2025-02-05 14:57:31,004 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:57:31,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:31,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:31,006 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) [2025-02-05 14:57:31,008 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 [2025-02-05 14:57:31,035 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 5 equivalence classes. [2025-02-05 14:57:31,046 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 14:57:31,046 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-05 14:57:31,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:31,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-05 14:57:31,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:31,429 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:31,429 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:31,885 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:31,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157588681] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:31,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:31,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 49 [2025-02-05 14:57:31,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642484349] [2025-02-05 14:57:31,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:31,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-05 14:57:31,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:31,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-05 14:57:31,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1927, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 14:57:31,887 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 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) [2025-02-05 14:57:31,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:31,996 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2025-02-05 14:57:31,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-05 14:57:31,996 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 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 31 [2025-02-05 14:57:31,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:31,996 INFO L225 Difference]: With dead ends: 68 [2025-02-05 14:57:31,996 INFO L226 Difference]: Without dead ends: 47 [2025-02-05 14:57:31,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 9 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=1927, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 14:57:31,997 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:31,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 98 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:31,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-02-05 14:57:32,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2025-02-05 14:57:32,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 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) [2025-02-05 14:57:32,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2025-02-05 14:57:32,004 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 31 [2025-02-05 14:57:32,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:32,004 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2025-02-05 14:57:32,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 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) [2025-02-05 14:57:32,004 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2025-02-05 14:57:32,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-05 14:57:32,004 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:32,004 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:32,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-05 14:57:32,205 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,SelfDestructingSolverStorable27 [2025-02-05 14:57:32,205 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:32,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:32,205 INFO L85 PathProgramCache]: Analyzing trace with hash 217038259, now seen corresponding path program 11 times [2025-02-05 14:57:32,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:32,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469520735] [2025-02-05 14:57:32,205 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:57:32,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:32,208 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 5 equivalence classes. [2025-02-05 14:57:32,213 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 14:57:32,213 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-05 14:57:32,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:32,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:32,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469520735] [2025-02-05 14:57:32,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469520735] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:32,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062190321] [2025-02-05 14:57:32,534 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:57:32,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:32,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:32,535 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) [2025-02-05 14:57:32,536 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 [2025-02-05 14:57:32,572 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 5 equivalence classes. [2025-02-05 14:57:32,582 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 14:57:32,582 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-05 14:57:32,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:32,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-05 14:57:32,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:33,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:33,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062190321] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:33,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:33,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 48 [2025-02-05 14:57:33,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17169323] [2025-02-05 14:57:33,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:33,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-05 14:57:33,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:33,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-05 14:57:33,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=1840, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 14:57:33,483 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 48 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 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) [2025-02-05 14:57:33,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:33,615 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2025-02-05 14:57:33,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-05 14:57:33,615 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 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 31 [2025-02-05 14:57:33,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:33,616 INFO L225 Difference]: With dead ends: 57 [2025-02-05 14:57:33,616 INFO L226 Difference]: Without dead ends: 50 [2025-02-05 14:57:33,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=445, Invalid=1907, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 14:57:33,617 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:33,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 104 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:33,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-05 14:57:33,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2025-02-05 14:57:33,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 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) [2025-02-05 14:57:33,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2025-02-05 14:57:33,621 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 31 [2025-02-05 14:57:33,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:33,622 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2025-02-05 14:57:33,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 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) [2025-02-05 14:57:33,622 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2025-02-05 14:57:33,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-05 14:57:33,622 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:33,622 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:33,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-02-05 14:57:33,822 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,SelfDestructingSolverStorable28 [2025-02-05 14:57:33,823 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:33,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:33,823 INFO L85 PathProgramCache]: Analyzing trace with hash 460691925, now seen corresponding path program 12 times [2025-02-05 14:57:33,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:33,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185616525] [2025-02-05 14:57:33,824 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:57:33,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:33,826 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 32 statements into 5 equivalence classes. [2025-02-05 14:57:33,830 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 14:57:33,830 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-05 14:57:33,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:34,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:34,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185616525] [2025-02-05 14:57:34,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185616525] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:34,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753005730] [2025-02-05 14:57:34,181 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:57:34,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:34,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:34,183 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) [2025-02-05 14:57:34,184 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 [2025-02-05 14:57:34,219 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 32 statements into 5 equivalence classes. [2025-02-05 14:57:34,230 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 14:57:34,230 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-05 14:57:34,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:34,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-05 14:57:34,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:34,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:34,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753005730] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:34,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:34,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 49 [2025-02-05 14:57:34,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730271806] [2025-02-05 14:57:34,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:34,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-05 14:57:34,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:34,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-05 14:57:34,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1891, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 14:57:34,855 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 49 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 49 states have internal predecessors, (65), 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) [2025-02-05 14:57:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:35,005 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2025-02-05 14:57:35,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 14:57:35,005 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 49 states have internal predecessors, (65), 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 [2025-02-05 14:57:35,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:35,006 INFO L225 Difference]: With dead ends: 70 [2025-02-05 14:57:35,006 INFO L226 Difference]: Without dead ends: 63 [2025-02-05 14:57:35,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 29 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=491, Invalid=1959, Unknown=0, NotChecked=0, Total=2450 [2025-02-05 14:57:35,006 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:35,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 148 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:35,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-05 14:57:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 49. [2025-02-05 14:57:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 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) [2025-02-05 14:57:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2025-02-05 14:57:35,012 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 32 [2025-02-05 14:57:35,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:35,012 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2025-02-05 14:57:35,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 49 states have internal predecessors, (65), 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) [2025-02-05 14:57:35,012 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2025-02-05 14:57:35,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-05 14:57:35,012 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:35,012 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:35,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-02-05 14:57:35,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:35,213 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:35,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash -911510121, now seen corresponding path program 12 times [2025-02-05 14:57:35,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:35,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880580130] [2025-02-05 14:57:35,214 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:57:35,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:35,219 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 32 statements into 5 equivalence classes. [2025-02-05 14:57:35,223 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 14:57:35,223 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-05 14:57:35,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:35,531 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:35,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:35,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880580130] [2025-02-05 14:57:35,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880580130] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:35,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138724276] [2025-02-05 14:57:35,532 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:57:35,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:35,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:35,534 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) [2025-02-05 14:57:35,535 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 [2025-02-05 14:57:35,564 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 32 statements into 5 equivalence classes. [2025-02-05 14:57:35,575 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 14:57:35,576 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-05 14:57:35,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:35,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-05 14:57:35,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:35,946 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:36,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138724276] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:36,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:36,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 49 [2025-02-05 14:57:36,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078355133] [2025-02-05 14:57:36,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:36,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-05 14:57:36,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:36,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-05 14:57:36,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=454, Invalid=1898, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 14:57:36,238 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 49 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 states have internal predecessors, (64), 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) [2025-02-05 14:57:36,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:36,367 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2025-02-05 14:57:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-05 14:57:36,367 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 states have internal predecessors, (64), 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 [2025-02-05 14:57:36,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:36,367 INFO L225 Difference]: With dead ends: 69 [2025-02-05 14:57:36,367 INFO L226 Difference]: Without dead ends: 48 [2025-02-05 14:57:36,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1464 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=471, Invalid=1979, Unknown=0, NotChecked=0, Total=2450 [2025-02-05 14:57:36,369 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:36,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 113 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:36,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-02-05 14:57:36,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2025-02-05 14:57:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 47 states have internal predecessors, (51), 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) [2025-02-05 14:57:36,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2025-02-05 14:57:36,374 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 32 [2025-02-05 14:57:36,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:36,374 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2025-02-05 14:57:36,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 states have internal predecessors, (64), 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) [2025-02-05 14:57:36,374 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2025-02-05 14:57:36,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-05 14:57:36,374 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:36,374 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:36,380 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 [2025-02-05 14:57:36,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:36,579 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:36,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:36,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1487911699, now seen corresponding path program 13 times [2025-02-05 14:57:36,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:36,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444217513] [2025-02-05 14:57:36,579 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:57:36,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:36,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-05 14:57:36,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-05 14:57:36,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:36,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:36,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:36,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444217513] [2025-02-05 14:57:36,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444217513] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:36,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943808604] [2025-02-05 14:57:36,924 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:57:36,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:36,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:36,928 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) [2025-02-05 14:57:36,929 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 [2025-02-05 14:57:36,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-05 14:57:36,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-05 14:57:36,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:36,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:36,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-05 14:57:36,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:37,499 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:37,499 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:37,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943808604] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:37,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:37,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 56 [2025-02-05 14:57:37,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868910274] [2025-02-05 14:57:37,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:37,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-02-05 14:57:37,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:37,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-02-05 14:57:37,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=2529, Unknown=0, NotChecked=0, Total=3080 [2025-02-05 14:57:37,936 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand has 56 states, 56 states have (on average 1.25) internal successors, (70), 56 states have internal predecessors, (70), 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) [2025-02-05 14:57:38,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:38,160 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2025-02-05 14:57:38,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-05 14:57:38,161 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.25) internal successors, (70), 56 states have internal predecessors, (70), 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 [2025-02-05 14:57:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:38,161 INFO L225 Difference]: With dead ends: 72 [2025-02-05 14:57:38,161 INFO L226 Difference]: Without dead ends: 50 [2025-02-05 14:57:38,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 9 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1981 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=579, Invalid=2727, Unknown=0, NotChecked=0, Total=3306 [2025-02-05 14:57:38,162 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:38,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 135 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-05 14:57:38,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2025-02-05 14:57:38,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 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) [2025-02-05 14:57:38,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2025-02-05 14:57:38,169 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 33 [2025-02-05 14:57:38,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:38,169 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2025-02-05 14:57:38,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.25) internal successors, (70), 56 states have internal predecessors, (70), 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) [2025-02-05 14:57:38,170 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2025-02-05 14:57:38,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-05 14:57:38,170 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:38,170 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:38,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-02-05 14:57:38,370 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,SelfDestructingSolverStorable31 [2025-02-05 14:57:38,371 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:38,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:38,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1050458323, now seen corresponding path program 13 times [2025-02-05 14:57:38,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:38,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230952898] [2025-02-05 14:57:38,371 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:57:38,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:38,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-05 14:57:38,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-05 14:57:38,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:38,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:38,737 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:38,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:38,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230952898] [2025-02-05 14:57:38,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230952898] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:38,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785932953] [2025-02-05 14:57:38,738 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:57:38,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:38,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:38,740 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) [2025-02-05 14:57:38,741 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 [2025-02-05 14:57:38,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-05 14:57:38,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-05 14:57:38,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:38,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:38,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-05 14:57:38,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:39,238 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:39,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785932953] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:39,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:39,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 55 [2025-02-05 14:57:39,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319688439] [2025-02-05 14:57:39,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:39,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-02-05 14:57:39,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:39,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-02-05 14:57:39,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=2420, Unknown=0, NotChecked=0, Total=2970 [2025-02-05 14:57:39,634 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 55 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 55 states have internal predecessors, (70), 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) [2025-02-05 14:57:39,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:39,762 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2025-02-05 14:57:39,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-05 14:57:39,762 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 55 states have internal predecessors, (70), 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 [2025-02-05 14:57:39,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:39,762 INFO L225 Difference]: With dead ends: 60 [2025-02-05 14:57:39,763 INFO L226 Difference]: Without dead ends: 53 [2025-02-05 14:57:39,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 26 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=582, Invalid=2498, Unknown=0, NotChecked=0, Total=3080 [2025-02-05 14:57:39,764 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:39,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 90 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:39,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-02-05 14:57:39,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2025-02-05 14:57:39,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.1) internal successors, (55), 50 states have internal predecessors, (55), 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) [2025-02-05 14:57:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2025-02-05 14:57:39,769 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 33 [2025-02-05 14:57:39,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:39,769 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2025-02-05 14:57:39,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 55 states have internal predecessors, (70), 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) [2025-02-05 14:57:39,769 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2025-02-05 14:57:39,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-05 14:57:39,771 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:39,771 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:39,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-02-05 14:57:39,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:39,975 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:39,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:39,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2115575977, now seen corresponding path program 14 times [2025-02-05 14:57:39,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:39,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648360198] [2025-02-05 14:57:39,975 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:57:39,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:39,978 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-05 14:57:39,980 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 14:57:39,980 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:57:39,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:40,377 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 28 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:40,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:40,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648360198] [2025-02-05 14:57:40,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648360198] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:40,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621474761] [2025-02-05 14:57:40,378 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:57:40,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:40,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:40,380 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) [2025-02-05 14:57:40,381 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 [2025-02-05 14:57:40,417 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-05 14:57:40,428 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 14:57:40,428 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:57:40,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:40,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-05 14:57:40,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:40,805 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:40,805 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:41,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621474761] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:41,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:41,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 54 [2025-02-05 14:57:41,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214127276] [2025-02-05 14:57:41,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:41,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-02-05 14:57:41,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:41,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-02-05 14:57:41,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=2306, Unknown=0, NotChecked=0, Total=2862 [2025-02-05 14:57:41,129 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 54 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 54 states have internal predecessors, (70), 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) [2025-02-05 14:57:41,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:41,254 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2025-02-05 14:57:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-05 14:57:41,254 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 54 states have internal predecessors, (70), 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 [2025-02-05 14:57:41,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:41,254 INFO L225 Difference]: With dead ends: 74 [2025-02-05 14:57:41,254 INFO L226 Difference]: Without dead ends: 67 [2025-02-05 14:57:41,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 29 SyntacticMatches, 9 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=589, Invalid=2381, Unknown=0, NotChecked=0, Total=2970 [2025-02-05 14:57:41,255 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:41,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 138 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:41,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-02-05 14:57:41,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 52. [2025-02-05 14:57:41,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 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) [2025-02-05 14:57:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2025-02-05 14:57:41,261 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 34 [2025-02-05 14:57:41,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:41,262 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2025-02-05 14:57:41,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 54 states have internal predecessors, (70), 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) [2025-02-05 14:57:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2025-02-05 14:57:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-05 14:57:41,262 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:41,262 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:41,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-02-05 14:57:41,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:41,463 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:41,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:41,463 INFO L85 PathProgramCache]: Analyzing trace with hash -845291913, now seen corresponding path program 14 times [2025-02-05 14:57:41,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:41,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336610850] [2025-02-05 14:57:41,463 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:57:41,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:41,468 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-05 14:57:41,475 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 14:57:41,475 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:57:41,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 37 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:41,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:41,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336610850] [2025-02-05 14:57:41,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336610850] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:41,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93832444] [2025-02-05 14:57:41,933 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:57:41,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:41,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:41,938 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) [2025-02-05 14:57:41,942 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 [2025-02-05 14:57:41,974 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-05 14:57:41,985 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 14:57:41,985 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:57:41,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:41,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-05 14:57:41,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:42,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:42,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93832444] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:42,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:42,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 54 [2025-02-05 14:57:42,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472965487] [2025-02-05 14:57:42,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:42,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-02-05 14:57:42,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:42,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-02-05 14:57:42,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=548, Invalid=2314, Unknown=0, NotChecked=0, Total=2862 [2025-02-05 14:57:42,832 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 54 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 54 states have internal predecessors, (69), 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) [2025-02-05 14:57:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:42,962 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2025-02-05 14:57:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-05 14:57:42,962 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 54 states have internal predecessors, (69), 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 [2025-02-05 14:57:42,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:42,963 INFO L225 Difference]: With dead ends: 73 [2025-02-05 14:57:42,963 INFO L226 Difference]: Without dead ends: 51 [2025-02-05 14:57:42,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 29 SyntacticMatches, 9 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1853 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=566, Invalid=2404, Unknown=0, NotChecked=0, Total=2970 [2025-02-05 14:57:42,963 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:42,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 97 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:42,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-02-05 14:57:42,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2025-02-05 14:57:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.08) internal successors, (54), 50 states have internal predecessors, (54), 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) [2025-02-05 14:57:42,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2025-02-05 14:57:42,970 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 34 [2025-02-05 14:57:42,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:42,970 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2025-02-05 14:57:42,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 54 states have internal predecessors, (69), 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) [2025-02-05 14:57:42,971 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2025-02-05 14:57:42,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-05 14:57:42,971 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:42,971 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:42,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-02-05 14:57:43,171 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,SelfDestructingSolverStorable34 [2025-02-05 14:57:43,172 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:43,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:43,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1066981935, now seen corresponding path program 15 times [2025-02-05 14:57:43,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:43,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725284491] [2025-02-05 14:57:43,172 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:57:43,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:43,176 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 6 equivalence classes. [2025-02-05 14:57:43,180 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 14:57:43,180 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 14:57:43,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:43,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:43,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725284491] [2025-02-05 14:57:43,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725284491] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:43,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149565430] [2025-02-05 14:57:43,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:57:43,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:43,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:43,632 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) [2025-02-05 14:57:43,634 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 [2025-02-05 14:57:43,670 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 6 equivalence classes. [2025-02-05 14:57:43,685 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 14:57:43,685 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 14:57:43,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:43,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-05 14:57:43,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:44,258 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:44,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149565430] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:44,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:44,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 61 [2025-02-05 14:57:44,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414974534] [2025-02-05 14:57:44,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:44,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2025-02-05 14:57:44,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:44,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2025-02-05 14:57:44,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=3007, Unknown=0, NotChecked=0, Total=3660 [2025-02-05 14:57:44,761 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 61 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 61 states have internal predecessors, (75), 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) [2025-02-05 14:57:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:44,996 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2025-02-05 14:57:44,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-05 14:57:44,997 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 61 states have internal predecessors, (75), 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 35 [2025-02-05 14:57:44,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:44,997 INFO L225 Difference]: With dead ends: 76 [2025-02-05 14:57:44,997 INFO L226 Difference]: Without dead ends: 53 [2025-02-05 14:57:44,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 24 SyntacticMatches, 11 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2428 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=682, Invalid=3224, Unknown=0, NotChecked=0, Total=3906 [2025-02-05 14:57:44,998 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:44,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 138 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:57:44,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-02-05 14:57:45,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2025-02-05 14:57:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 52 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) [2025-02-05 14:57:45,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2025-02-05 14:57:45,004 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 35 [2025-02-05 14:57:45,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:45,004 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2025-02-05 14:57:45,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 61 states have internal predecessors, (75), 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) [2025-02-05 14:57:45,005 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2025-02-05 14:57:45,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-05 14:57:45,005 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:45,005 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:45,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2025-02-05 14:57:45,205 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,SelfDestructingSolverStorable35 [2025-02-05 14:57:45,206 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:45,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:45,206 INFO L85 PathProgramCache]: Analyzing trace with hash -884260173, now seen corresponding path program 15 times [2025-02-05 14:57:45,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:45,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194187786] [2025-02-05 14:57:45,206 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:57:45,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:45,209 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 6 equivalence classes. [2025-02-05 14:57:45,212 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 14:57:45,212 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 14:57:45,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:45,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:45,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194187786] [2025-02-05 14:57:45,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194187786] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:45,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81955870] [2025-02-05 14:57:45,647 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:57:45,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:45,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:45,649 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) [2025-02-05 14:57:45,650 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 [2025-02-05 14:57:45,683 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 35 statements into 6 equivalence classes. [2025-02-05 14:57:45,695 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 14:57:45,695 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 14:57:45,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:45,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-05 14:57:45,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:46,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:46,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81955870] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:46,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:46,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 60 [2025-02-05 14:57:46,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704566948] [2025-02-05 14:57:46,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:46,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2025-02-05 14:57:46,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:46,496 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2025-02-05 14:57:46,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=2887, Unknown=0, NotChecked=0, Total=3540 [2025-02-05 14:57:46,496 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 60 states, 60 states have (on average 1.25) internal successors, (75), 60 states have internal predecessors, (75), 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) [2025-02-05 14:57:46,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:46,601 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2025-02-05 14:57:46,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-05 14:57:46,602 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.25) internal successors, (75), 60 states have internal predecessors, (75), 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 35 [2025-02-05 14:57:46,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:46,602 INFO L225 Difference]: With dead ends: 63 [2025-02-05 14:57:46,602 INFO L226 Difference]: Without dead ends: 56 [2025-02-05 14:57:46,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 26 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2296 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=688, Invalid=2972, Unknown=0, NotChecked=0, Total=3660 [2025-02-05 14:57:46,603 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:46,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 74 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:46,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-05 14:57:46,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2025-02-05 14:57:46,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 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) [2025-02-05 14:57:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2025-02-05 14:57:46,609 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 35 [2025-02-05 14:57:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:46,609 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2025-02-05 14:57:46,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.25) internal successors, (75), 60 states have internal predecessors, (75), 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) [2025-02-05 14:57:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2025-02-05 14:57:46,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-05 14:57:46,609 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:46,609 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:46,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-02-05 14:57:46,810 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,SelfDestructingSolverStorable36 [2025-02-05 14:57:46,810 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:46,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2019969301, now seen corresponding path program 16 times [2025-02-05 14:57:46,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:46,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891914675] [2025-02-05 14:57:46,810 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:57:46,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:46,813 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-02-05 14:57:46,815 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-05 14:57:46,815 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:57:46,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:47,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:47,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891914675] [2025-02-05 14:57:47,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891914675] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:47,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360073525] [2025-02-05 14:57:47,252 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:57:47,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:47,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:47,254 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) [2025-02-05 14:57:47,255 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 [2025-02-05 14:57:47,293 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-02-05 14:57:47,304 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-05 14:57:47,305 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:57:47,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:47,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-05 14:57:47,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:47,722 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:47,722 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:48,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360073525] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:48,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:48,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 58 [2025-02-05 14:57:48,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361222364] [2025-02-05 14:57:48,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:48,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-02-05 14:57:48,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:48,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-02-05 14:57:48,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=646, Invalid=2660, Unknown=0, NotChecked=0, Total=3306 [2025-02-05 14:57:48,121 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 58 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 58 states have internal predecessors, (73), 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) [2025-02-05 14:57:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:48,253 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2025-02-05 14:57:48,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-05 14:57:48,253 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 58 states have internal predecessors, (73), 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 36 [2025-02-05 14:57:48,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:48,257 INFO L225 Difference]: With dead ends: 78 [2025-02-05 14:57:48,257 INFO L226 Difference]: Without dead ends: 71 [2025-02-05 14:57:48,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 29 SyntacticMatches, 11 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=683, Invalid=2739, Unknown=0, NotChecked=0, Total=3422 [2025-02-05 14:57:48,258 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:48,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 118 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:48,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-02-05 14:57:48,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 55. [2025-02-05 14:57:48,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 54 states have internal predecessors, (59), 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) [2025-02-05 14:57:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2025-02-05 14:57:48,265 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 36 [2025-02-05 14:57:48,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:48,265 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2025-02-05 14:57:48,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 58 states have internal predecessors, (73), 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) [2025-02-05 14:57:48,265 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2025-02-05 14:57:48,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-05 14:57:48,265 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:48,265 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:48,271 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 [2025-02-05 14:57:48,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:48,466 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:48,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:48,466 INFO L85 PathProgramCache]: Analyzing trace with hash -692023145, now seen corresponding path program 16 times [2025-02-05 14:57:48,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:48,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9906629] [2025-02-05 14:57:48,466 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:57:48,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:48,469 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-02-05 14:57:48,471 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-05 14:57:48,471 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:57:48,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:48,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:48,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9906629] [2025-02-05 14:57:48,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9906629] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:48,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950760687] [2025-02-05 14:57:48,966 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:57:48,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:48,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:48,968 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) [2025-02-05 14:57:48,969 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 [2025-02-05 14:57:49,002 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 36 statements into 2 equivalence classes. [2025-02-05 14:57:49,014 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-05 14:57:49,014 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:57:49,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:49,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-05 14:57:49,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:49,524 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:49,524 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:49,998 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 55 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:49,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950760687] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:49,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:49,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 56 [2025-02-05 14:57:49,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158150607] [2025-02-05 14:57:49,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:49,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-02-05 14:57:49,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:49,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-02-05 14:57:49,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=596, Invalid=2484, Unknown=0, NotChecked=0, Total=3080 [2025-02-05 14:57:49,999 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 56 states, 56 states have (on average 1.25) internal successors, (70), 56 states have internal predecessors, (70), 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) [2025-02-05 14:57:50,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:50,140 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2025-02-05 14:57:50,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-05 14:57:50,140 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.25) internal successors, (70), 56 states have internal predecessors, (70), 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 36 [2025-02-05 14:57:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:50,140 INFO L225 Difference]: With dead ends: 77 [2025-02-05 14:57:50,140 INFO L226 Difference]: Without dead ends: 54 [2025-02-05 14:57:50,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 30 SyntacticMatches, 11 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1640 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=613, Invalid=2579, Unknown=0, NotChecked=0, Total=3192 [2025-02-05 14:57:50,141 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:50,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-02-05 14:57:50,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2025-02-05 14:57:50,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 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) [2025-02-05 14:57:50,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2025-02-05 14:57:50,147 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 36 [2025-02-05 14:57:50,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:50,147 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2025-02-05 14:57:50,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.25) internal successors, (70), 56 states have internal predecessors, (70), 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) [2025-02-05 14:57:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2025-02-05 14:57:50,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-05 14:57:50,148 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:50,148 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:50,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2025-02-05 14:57:50,352 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,SelfDestructingSolverStorable38 [2025-02-05 14:57:50,352 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:50,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:50,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1714097197, now seen corresponding path program 17 times [2025-02-05 14:57:50,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:50,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158073203] [2025-02-05 14:57:50,352 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:57:50,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:50,355 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 6 equivalence classes. [2025-02-05 14:57:50,357 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 37 of 37 statements. [2025-02-05 14:57:50,357 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-05 14:57:50,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 55 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:50,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:50,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158073203] [2025-02-05 14:57:50,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158073203] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:50,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771068218] [2025-02-05 14:57:50,789 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:57:50,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:50,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:50,792 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) [2025-02-05 14:57:50,792 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 [2025-02-05 14:57:50,830 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 6 equivalence classes. [2025-02-05 14:57:50,843 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 37 of 37 statements. [2025-02-05 14:57:50,843 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-05 14:57:50,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:50,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-05 14:57:50,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 55 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:51,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:51,885 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 55 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:51,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771068218] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:51,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:51,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 64 [2025-02-05 14:57:51,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612817562] [2025-02-05 14:57:51,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:51,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-02-05 14:57:51,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:51,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-02-05 14:57:51,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=722, Invalid=3310, Unknown=0, NotChecked=0, Total=4032 [2025-02-05 14:57:51,887 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 64 states, 64 states have (on average 1.203125) internal successors, (77), 64 states have internal predecessors, (77), 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) [2025-02-05 14:57:52,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:52,013 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2025-02-05 14:57:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-05 14:57:52,013 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.203125) internal successors, (77), 64 states have internal predecessors, (77), 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 [2025-02-05 14:57:52,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:52,014 INFO L225 Difference]: With dead ends: 80 [2025-02-05 14:57:52,014 INFO L226 Difference]: Without dead ends: 56 [2025-02-05 14:57:52,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 26 SyntacticMatches, 12 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=722, Invalid=3310, Unknown=0, NotChecked=0, Total=4032 [2025-02-05 14:57:52,014 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:52,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 126 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:52,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-05 14:57:52,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-02-05 14:57:52,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 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) [2025-02-05 14:57:52,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2025-02-05 14:57:52,027 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 37 [2025-02-05 14:57:52,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:52,027 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2025-02-05 14:57:52,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.203125) internal successors, (77), 64 states have internal predecessors, (77), 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) [2025-02-05 14:57:52,027 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2025-02-05 14:57:52,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-05 14:57:52,028 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:52,028 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:52,034 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 [2025-02-05 14:57:52,229 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,SelfDestructingSolverStorable39 [2025-02-05 14:57:52,229 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:52,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:52,229 INFO L85 PathProgramCache]: Analyzing trace with hash 514184659, now seen corresponding path program 17 times [2025-02-05 14:57:52,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:52,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581931210] [2025-02-05 14:57:52,229 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:57:52,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:52,236 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 6 equivalence classes. [2025-02-05 14:57:52,238 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 37 of 37 statements. [2025-02-05 14:57:52,238 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-05 14:57:52,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 55 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:52,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:52,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581931210] [2025-02-05 14:57:52,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581931210] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:52,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643920191] [2025-02-05 14:57:52,752 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:57:52,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:52,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:52,754 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) [2025-02-05 14:57:52,756 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 [2025-02-05 14:57:52,798 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 6 equivalence classes. [2025-02-05 14:57:52,810 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 37 of 37 statements. [2025-02-05 14:57:52,810 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-05 14:57:52,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:52,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-05 14:57:52,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 55 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:53,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 55 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:53,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643920191] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:53,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:53,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 64 [2025-02-05 14:57:53,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577104962] [2025-02-05 14:57:53,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:53,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-02-05 14:57:53,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:53,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-02-05 14:57:53,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=750, Invalid=3282, Unknown=0, NotChecked=0, Total=4032 [2025-02-05 14:57:53,725 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 64 states, 64 states have (on average 1.21875) internal successors, (78), 64 states have internal predecessors, (78), 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) [2025-02-05 14:57:53,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:53,866 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2025-02-05 14:57:53,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-05 14:57:53,866 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.21875) internal successors, (78), 64 states have internal predecessors, (78), 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 [2025-02-05 14:57:53,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:53,866 INFO L225 Difference]: With dead ends: 66 [2025-02-05 14:57:53,866 INFO L226 Difference]: Without dead ends: 59 [2025-02-05 14:57:53,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 26 SyntacticMatches, 12 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2642 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=789, Invalid=3371, Unknown=0, NotChecked=0, Total=4160 [2025-02-05 14:57:53,867 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:53,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 131 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:53,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-02-05 14:57:53,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2025-02-05 14:57:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 56 states have internal predecessors, (61), 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) [2025-02-05 14:57:53,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2025-02-05 14:57:53,876 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 37 [2025-02-05 14:57:53,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:53,877 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2025-02-05 14:57:53,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.21875) internal successors, (78), 64 states have internal predecessors, (78), 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) [2025-02-05 14:57:53,877 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2025-02-05 14:57:53,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-05 14:57:53,877 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:53,877 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:53,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2025-02-05 14:57:54,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:54,082 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:54,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:54,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1318606359, now seen corresponding path program 18 times [2025-02-05 14:57:54,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:54,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001529019] [2025-02-05 14:57:54,082 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:57:54,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:54,088 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 7 equivalence classes. [2025-02-05 14:57:54,104 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 14:57:54,104 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 14:57:54,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 45 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:54,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:54,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001529019] [2025-02-05 14:57:54,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001529019] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:54,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328025198] [2025-02-05 14:57:54,708 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:57:54,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:54,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:54,711 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) [2025-02-05 14:57:54,711 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 [2025-02-05 14:57:54,748 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 7 equivalence classes. [2025-02-05 14:57:54,762 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 14:57:54,762 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 14:57:54,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:54,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-05 14:57:54,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 55 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:55,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:55,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328025198] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:55,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:55,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 65 [2025-02-05 14:57:55,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513778187] [2025-02-05 14:57:55,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:55,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2025-02-05 14:57:55,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:55,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2025-02-05 14:57:55,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=798, Invalid=3362, Unknown=0, NotChecked=0, Total=4160 [2025-02-05 14:57:55,627 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 65 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 65 states have internal predecessors, (84), 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) [2025-02-05 14:57:55,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:55,777 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2025-02-05 14:57:55,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-05 14:57:55,777 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 65 states have internal predecessors, (84), 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 [2025-02-05 14:57:55,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:55,779 INFO L225 Difference]: With dead ends: 82 [2025-02-05 14:57:55,779 INFO L226 Difference]: Without dead ends: 75 [2025-02-05 14:57:55,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 29 SyntacticMatches, 10 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2764 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=837, Invalid=3453, Unknown=0, NotChecked=0, Total=4290 [2025-02-05 14:57:55,781 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:55,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 155 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2025-02-05 14:57:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 58. [2025-02-05 14:57:55,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 states have internal predecessors, (62), 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) [2025-02-05 14:57:55,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2025-02-05 14:57:55,790 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 38 [2025-02-05 14:57:55,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:55,790 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2025-02-05 14:57:55,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 65 states have internal predecessors, (84), 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) [2025-02-05 14:57:55,790 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2025-02-05 14:57:55,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-05 14:57:55,790 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:55,791 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:55,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-02-05 14:57:55,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:55,995 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:55,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:55,995 INFO L85 PathProgramCache]: Analyzing trace with hash -289906313, now seen corresponding path program 18 times [2025-02-05 14:57:55,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:55,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444036598] [2025-02-05 14:57:55,995 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:57:55,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:55,999 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 7 equivalence classes. [2025-02-05 14:57:56,004 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 14:57:56,004 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 14:57:56,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:56,434 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 56 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:56,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:56,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444036598] [2025-02-05 14:57:56,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444036598] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:56,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444366661] [2025-02-05 14:57:56,434 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:57:56,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:56,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:56,436 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) [2025-02-05 14:57:56,438 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 [2025-02-05 14:57:56,473 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 38 statements into 7 equivalence classes. [2025-02-05 14:57:56,487 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 14:57:56,487 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 14:57:56,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:56,488 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-05 14:57:56,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:57,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 66 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:57,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444366661] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:57,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:57,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 64 [2025-02-05 14:57:57,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729674612] [2025-02-05 14:57:57,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:57,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-02-05 14:57:57,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:57,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-02-05 14:57:57,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=3269, Unknown=0, NotChecked=0, Total=4032 [2025-02-05 14:57:57,539 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 64 states, 64 states have (on average 1.234375) internal successors, (79), 64 states have internal predecessors, (79), 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) [2025-02-05 14:57:57,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:57,721 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2025-02-05 14:57:57,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-05 14:57:57,722 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.234375) internal successors, (79), 64 states have internal predecessors, (79), 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 [2025-02-05 14:57:57,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:57,722 INFO L225 Difference]: With dead ends: 81 [2025-02-05 14:57:57,722 INFO L226 Difference]: Without dead ends: 57 [2025-02-05 14:57:57,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 30 SyntacticMatches, 10 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2658 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=783, Invalid=3377, Unknown=0, NotChecked=0, Total=4160 [2025-02-05 14:57:57,723 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:57,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 115 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:57,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-02-05 14:57:57,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2025-02-05 14:57:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 56 states have internal predecessors, (60), 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) [2025-02-05 14:57:57,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2025-02-05 14:57:57,730 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 38 [2025-02-05 14:57:57,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:57,730 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2025-02-05 14:57:57,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.234375) internal successors, (79), 64 states have internal predecessors, (79), 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) [2025-02-05 14:57:57,730 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2025-02-05 14:57:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-05 14:57:57,730 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:57,731 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:57,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2025-02-05 14:57:57,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2025-02-05 14:57:57,935 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:57:57,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:57:57,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1981511919, now seen corresponding path program 19 times [2025-02-05 14:57:57,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:57:57,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370645922] [2025-02-05 14:57:57,935 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:57:57,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:57:57,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 14:57:57,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 14:57:57,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:57,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 55 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:58,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:57:58,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370645922] [2025-02-05 14:57:58,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370645922] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:57:58,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754309175] [2025-02-05 14:57:58,431 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:57:58,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:57:58,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:57:58,434 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:57:58,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-02-05 14:57:58,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 14:57:58,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 14:57:58,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:57:58,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:57:58,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-05 14:57:58,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:57:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 66 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:59,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:57:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 66 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:57:59,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754309175] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:57:59,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:57:59,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 71 [2025-02-05 14:57:59,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583217391] [2025-02-05 14:57:59,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:57:59,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-02-05 14:57:59,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:57:59,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-02-05 14:57:59,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=4086, Unknown=0, NotChecked=0, Total=4970 [2025-02-05 14:57:59,663 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 71 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 71 states have internal predecessors, (85), 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) [2025-02-05 14:57:59,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:57:59,887 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2025-02-05 14:57:59,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-05 14:57:59,887 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 71 states have internal predecessors, (85), 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 [2025-02-05 14:57:59,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:57:59,888 INFO L225 Difference]: With dead ends: 84 [2025-02-05 14:57:59,888 INFO L226 Difference]: Without dead ends: 59 [2025-02-05 14:57:59,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 25 SyntacticMatches, 12 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3343 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=915, Invalid=4341, Unknown=0, NotChecked=0, Total=5256 [2025-02-05 14:57:59,888 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:57:59,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 131 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:57:59,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-02-05 14:57:59,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2025-02-05 14:57:59,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 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) [2025-02-05 14:57:59,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2025-02-05 14:57:59,897 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 39 [2025-02-05 14:57:59,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:57:59,897 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2025-02-05 14:57:59,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 71 states have internal predecessors, (85), 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) [2025-02-05 14:57:59,898 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2025-02-05 14:57:59,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-05 14:57:59,901 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:57:59,901 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:57:59,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2025-02-05 14:58:00,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,40 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:00,102 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:00,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:00,102 INFO L85 PathProgramCache]: Analyzing trace with hash -765376589, now seen corresponding path program 19 times [2025-02-05 14:58:00,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:00,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926169473] [2025-02-05 14:58:00,102 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:58:00,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:00,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 14:58:00,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 14:58:00,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:58:00,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 55 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:00,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:00,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926169473] [2025-02-05 14:58:00,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926169473] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:00,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123910750] [2025-02-05 14:58:00,577 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:58:00,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:00,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:00,579 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:00,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-02-05 14:58:00,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 14:58:00,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 14:58:00,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:58:00,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:00,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-05 14:58:00,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 66 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:01,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 66 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:01,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123910750] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:01,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:01,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 70 [2025-02-05 14:58:01,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803394924] [2025-02-05 14:58:01,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:01,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2025-02-05 14:58:01,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:01,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2025-02-05 14:58:01,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=886, Invalid=3944, Unknown=0, NotChecked=0, Total=4830 [2025-02-05 14:58:01,920 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 70 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 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) [2025-02-05 14:58:02,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:02,052 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2025-02-05 14:58:02,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-05 14:58:02,052 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 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 [2025-02-05 14:58:02,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:02,053 INFO L225 Difference]: With dead ends: 69 [2025-02-05 14:58:02,053 INFO L226 Difference]: Without dead ends: 62 [2025-02-05 14:58:02,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 26 SyntacticMatches, 12 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3223 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=927, Invalid=4043, Unknown=0, NotChecked=0, Total=4970 [2025-02-05 14:58:02,053 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:02,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 74 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:58:02,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-05 14:58:02,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2025-02-05 14:58:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 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) [2025-02-05 14:58:02,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2025-02-05 14:58:02,061 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 39 [2025-02-05 14:58:02,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:02,061 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2025-02-05 14:58:02,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 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) [2025-02-05 14:58:02,061 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2025-02-05 14:58:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-05 14:58:02,062 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:02,062 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:02,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2025-02-05 14:58:02,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-02-05 14:58:02,266 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:02,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:02,266 INFO L85 PathProgramCache]: Analyzing trace with hash 458778709, now seen corresponding path program 20 times [2025-02-05 14:58:02,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:02,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768697639] [2025-02-05 14:58:02,267 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:58:02,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:02,270 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-02-05 14:58:02,275 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-02-05 14:58:02,275 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:58:02,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 55 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:02,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:02,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768697639] [2025-02-05 14:58:02,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768697639] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:02,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633158952] [2025-02-05 14:58:02,862 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:58:02,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:02,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:02,864 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:02,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-02-05 14:58:02,902 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-02-05 14:58:02,915 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-02-05 14:58:02,915 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:58:02,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:02,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-05 14:58:02,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 66 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:03,502 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:03,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633158952] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:03,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:03,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 69 [2025-02-05 14:58:03,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065489931] [2025-02-05 14:58:03,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:03,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2025-02-05 14:58:03,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:03,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2025-02-05 14:58:03,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=895, Invalid=3797, Unknown=0, NotChecked=0, Total=4692 [2025-02-05 14:58:03,977 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 69 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 69 states have internal predecessors, (85), 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) [2025-02-05 14:58:04,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:04,143 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2025-02-05 14:58:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-05 14:58:04,143 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 69 states have internal predecessors, (85), 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 40 [2025-02-05 14:58:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:04,143 INFO L225 Difference]: With dead ends: 86 [2025-02-05 14:58:04,143 INFO L226 Difference]: Without dead ends: 79 [2025-02-05 14:58:04,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 29 SyntacticMatches, 12 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3199 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=937, Invalid=3893, Unknown=0, NotChecked=0, Total=4830 [2025-02-05 14:58:04,144 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:04,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 114 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:58:04,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-02-05 14:58:04,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 61. [2025-02-05 14:58:04,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 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) [2025-02-05 14:58:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2025-02-05 14:58:04,153 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 40 [2025-02-05 14:58:04,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:04,153 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2025-02-05 14:58:04,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 69 states have internal predecessors, (85), 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) [2025-02-05 14:58:04,153 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2025-02-05 14:58:04,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-05 14:58:04,154 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:04,154 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:04,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2025-02-05 14:58:04,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-02-05 14:58:04,358 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:04,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:04,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1301599337, now seen corresponding path program 20 times [2025-02-05 14:58:04,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:04,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599219283] [2025-02-05 14:58:04,359 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:58:04,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:04,365 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-02-05 14:58:04,368 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-02-05 14:58:04,368 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:58:04,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:04,857 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 67 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:04,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:04,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599219283] [2025-02-05 14:58:04,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599219283] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:04,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361167397] [2025-02-05 14:58:04,858 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:58:04,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:04,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:04,860 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:04,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2025-02-05 14:58:04,899 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-02-05 14:58:04,912 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-02-05 14:58:04,912 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:58:04,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:04,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-05 14:58:04,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:05,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:06,076 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:06,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361167397] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:06,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:06,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 69 [2025-02-05 14:58:06,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667484888] [2025-02-05 14:58:06,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:06,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2025-02-05 14:58:06,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:06,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2025-02-05 14:58:06,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=3808, Unknown=0, NotChecked=0, Total=4692 [2025-02-05 14:58:06,078 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 69 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 69 states have internal predecessors, (84), 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) [2025-02-05 14:58:06,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:06,246 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2025-02-05 14:58:06,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-05 14:58:06,247 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 69 states have internal predecessors, (84), 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 40 [2025-02-05 14:58:06,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:06,247 INFO L225 Difference]: With dead ends: 85 [2025-02-05 14:58:06,247 INFO L226 Difference]: Without dead ends: 60 [2025-02-05 14:58:06,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 29 SyntacticMatches, 12 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3173 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=905, Invalid=3925, Unknown=0, NotChecked=0, Total=4830 [2025-02-05 14:58:06,248 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:06,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 118 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:58:06,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-02-05 14:58:06,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-02-05 14:58:06,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 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) [2025-02-05 14:58:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2025-02-05 14:58:06,260 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 40 [2025-02-05 14:58:06,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:06,260 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2025-02-05 14:58:06,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 69 states have internal predecessors, (84), 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) [2025-02-05 14:58:06,260 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2025-02-05 14:58:06,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-05 14:58:06,260 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:06,260 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:06,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2025-02-05 14:58:06,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-02-05 14:58:06,461 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:06,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:06,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1428602003, now seen corresponding path program 21 times [2025-02-05 14:58:06,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:06,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890785590] [2025-02-05 14:58:06,461 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:58:06,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:06,464 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 7 equivalence classes. [2025-02-05 14:58:06,468 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 41 of 41 statements. [2025-02-05 14:58:06,468 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-05 14:58:06,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 66 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:07,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:07,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890785590] [2025-02-05 14:58:07,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890785590] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:07,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370678978] [2025-02-05 14:58:07,050 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:58:07,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:07,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:07,052 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:07,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2025-02-05 14:58:07,094 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 7 equivalence classes. [2025-02-05 14:58:07,108 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 41 of 41 statements. [2025-02-05 14:58:07,108 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-05 14:58:07,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:07,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-05 14:58:07,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:08,013 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 78 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:08,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 78 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:08,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370678978] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:08,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:08,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 76 [2025-02-05 14:58:08,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975468440] [2025-02-05 14:58:08,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:08,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2025-02-05 14:58:08,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:08,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2025-02-05 14:58:08,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1013, Invalid=4687, Unknown=0, NotChecked=0, Total=5700 [2025-02-05 14:58:08,650 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 76 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 76 states have internal predecessors, (90), 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) [2025-02-05 14:58:08,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:08,906 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2025-02-05 14:58:08,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-05 14:58:08,907 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 76 states have internal predecessors, (90), 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 41 [2025-02-05 14:58:08,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:08,907 INFO L225 Difference]: With dead ends: 88 [2025-02-05 14:58:08,907 INFO L226 Difference]: Without dead ends: 62 [2025-02-05 14:58:08,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 24 SyntacticMatches, 14 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3916 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1045, Invalid=4961, Unknown=0, NotChecked=0, Total=6006 [2025-02-05 14:58:08,908 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:08,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 135 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:58:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-05 14:58:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2025-02-05 14:58:08,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 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) [2025-02-05 14:58:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2025-02-05 14:58:08,918 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 41 [2025-02-05 14:58:08,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:08,918 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2025-02-05 14:58:08,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 76 states have internal predecessors, (90), 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) [2025-02-05 14:58:08,919 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2025-02-05 14:58:08,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-05 14:58:08,919 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:08,919 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:08,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2025-02-05 14:58:09,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,44 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:09,123 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:09,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:09,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1332966099, now seen corresponding path program 21 times [2025-02-05 14:58:09,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:09,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380437232] [2025-02-05 14:58:09,123 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:58:09,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:09,126 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 7 equivalence classes. [2025-02-05 14:58:09,130 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 41 of 41 statements. [2025-02-05 14:58:09,130 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-05 14:58:09,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 66 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:09,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:09,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380437232] [2025-02-05 14:58:09,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380437232] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:09,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975547603] [2025-02-05 14:58:09,747 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:58:09,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:09,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:09,749 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:09,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2025-02-05 14:58:09,787 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 41 statements into 7 equivalence classes. [2025-02-05 14:58:09,801 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 41 of 41 statements. [2025-02-05 14:58:09,801 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-05 14:58:09,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:09,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-05 14:58:09,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:10,494 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 78 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:10,494 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 78 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:11,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975547603] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:11,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:11,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 75 [2025-02-05 14:58:11,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335661952] [2025-02-05 14:58:11,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:11,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2025-02-05 14:58:11,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:11,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2025-02-05 14:58:11,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1016, Invalid=4534, Unknown=0, NotChecked=0, Total=5550 [2025-02-05 14:58:11,015 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand has 75 states, 75 states have (on average 1.2) internal successors, (90), 75 states have internal predecessors, (90), 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) [2025-02-05 14:58:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:11,174 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2025-02-05 14:58:11,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-05 14:58:11,174 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.2) internal successors, (90), 75 states have internal predecessors, (90), 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 41 [2025-02-05 14:58:11,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:11,174 INFO L225 Difference]: With dead ends: 72 [2025-02-05 14:58:11,174 INFO L226 Difference]: Without dead ends: 65 [2025-02-05 14:58:11,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 26 SyntacticMatches, 13 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3745 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1060, Invalid=4640, Unknown=0, NotChecked=0, Total=5700 [2025-02-05 14:58:11,175 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:11,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 114 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:58:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-02-05 14:58:11,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2025-02-05 14:58:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 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) [2025-02-05 14:58:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2025-02-05 14:58:11,187 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 41 [2025-02-05 14:58:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:11,187 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2025-02-05 14:58:11,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.2) internal successors, (90), 75 states have internal predecessors, (90), 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) [2025-02-05 14:58:11,187 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2025-02-05 14:58:11,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-05 14:58:11,188 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:11,188 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:11,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2025-02-05 14:58:11,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-02-05 14:58:11,389 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:11,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:11,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1495751895, now seen corresponding path program 22 times [2025-02-05 14:58:11,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:11,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166848116] [2025-02-05 14:58:11,389 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:58:11,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:11,392 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-02-05 14:58:11,394 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 14:58:11,394 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:58:11,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 78 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:11,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:11,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166848116] [2025-02-05 14:58:11,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166848116] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:11,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596563467] [2025-02-05 14:58:11,978 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:58:11,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:11,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:11,980 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:11,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2025-02-05 14:58:12,023 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-02-05 14:58:12,034 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 14:58:12,035 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:58:12,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:12,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-05 14:58:12,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 78 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:12,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:13,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596563467] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:13,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:13,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 73 [2025-02-05 14:58:13,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053662536] [2025-02-05 14:58:13,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:13,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2025-02-05 14:58:13,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:13,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2025-02-05 14:58:13,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1009, Invalid=4247, Unknown=0, NotChecked=0, Total=5256 [2025-02-05 14:58:13,418 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 73 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 73 states have internal predecessors, (88), 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) [2025-02-05 14:58:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:13,637 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2025-02-05 14:58:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-05 14:58:13,637 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 73 states have internal predecessors, (88), 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 42 [2025-02-05 14:58:13,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:13,641 INFO L225 Difference]: With dead ends: 90 [2025-02-05 14:58:13,641 INFO L226 Difference]: Without dead ends: 83 [2025-02-05 14:58:13,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 29 SyntacticMatches, 14 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3606 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1055, Invalid=4347, Unknown=0, NotChecked=0, Total=5402 [2025-02-05 14:58:13,642 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:13,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 210 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:58:13,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-02-05 14:58:13,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2025-02-05 14:58:13,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 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) [2025-02-05 14:58:13,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2025-02-05 14:58:13,651 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 42 [2025-02-05 14:58:13,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:13,651 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2025-02-05 14:58:13,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 73 states have internal predecessors, (88), 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) [2025-02-05 14:58:13,651 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2025-02-05 14:58:13,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-05 14:58:13,652 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:13,652 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:13,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2025-02-05 14:58:13,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-02-05 14:58:13,853 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:13,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash -677485449, now seen corresponding path program 22 times [2025-02-05 14:58:13,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:13,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259236675] [2025-02-05 14:58:13,853 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:58:13,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:13,856 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-02-05 14:58:13,858 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 14:58:13,859 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:58:13,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:14,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:14,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259236675] [2025-02-05 14:58:14,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259236675] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:14,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026716804] [2025-02-05 14:58:14,394 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:58:14,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:14,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:14,396 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:14,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2025-02-05 14:58:14,437 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-02-05 14:58:14,452 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 14:58:14,452 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:58:14,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:14,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-05 14:58:14,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:15,209 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 91 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:15,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026716804] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:15,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:15,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 73 [2025-02-05 14:58:15,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350869833] [2025-02-05 14:58:15,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:15,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2025-02-05 14:58:15,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:15,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2025-02-05 14:58:15,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1009, Invalid=4247, Unknown=0, NotChecked=0, Total=5256 [2025-02-05 14:58:15,837 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand has 73 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 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) [2025-02-05 14:58:16,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:16,020 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2025-02-05 14:58:16,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-05 14:58:16,021 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 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 42 [2025-02-05 14:58:16,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:16,021 INFO L225 Difference]: With dead ends: 89 [2025-02-05 14:58:16,021 INFO L226 Difference]: Without dead ends: 63 [2025-02-05 14:58:16,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 29 SyntacticMatches, 14 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3592 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1031, Invalid=4371, Unknown=0, NotChecked=0, Total=5402 [2025-02-05 14:58:16,022 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:16,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 169 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:58:16,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-05 14:58:16,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2025-02-05 14:58:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 states have internal predecessors, (66), 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) [2025-02-05 14:58:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2025-02-05 14:58:16,031 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 42 [2025-02-05 14:58:16,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:16,031 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2025-02-05 14:58:16,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 73 states have internal predecessors, (87), 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) [2025-02-05 14:58:16,032 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2025-02-05 14:58:16,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-05 14:58:16,032 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:16,032 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:16,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2025-02-05 14:58:16,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:16,236 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:16,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:16,236 INFO L85 PathProgramCache]: Analyzing trace with hash -784967599, now seen corresponding path program 23 times [2025-02-05 14:58:16,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:16,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063619527] [2025-02-05 14:58:16,236 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:58:16,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:16,239 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 8 equivalence classes. [2025-02-05 14:58:16,242 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 43 of 43 statements. [2025-02-05 14:58:16,242 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-02-05 14:58:16,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 91 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:16,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:16,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063619527] [2025-02-05 14:58:16,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063619527] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:16,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606036823] [2025-02-05 14:58:16,738 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:58:16,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:16,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:16,740 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:16,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2025-02-05 14:58:16,784 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 8 equivalence classes. [2025-02-05 14:58:16,798 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 43 of 43 statements. [2025-02-05 14:58:16,798 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-02-05 14:58:16,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:16,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-02-05 14:58:16,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 91 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:17,620 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 91 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:18,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606036823] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:18,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:18,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 80 [2025-02-05 14:58:18,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885794549] [2025-02-05 14:58:18,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:18,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2025-02-05 14:58:18,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:18,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2025-02-05 14:58:18,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1146, Invalid=5174, Unknown=0, NotChecked=0, Total=6320 [2025-02-05 14:58:18,366 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 80 states, 80 states have (on average 1.1625) internal successors, (93), 80 states have internal predecessors, (93), 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) [2025-02-05 14:58:18,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:18,605 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2025-02-05 14:58:18,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-05 14:58:18,606 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.1625) internal successors, (93), 80 states have internal predecessors, (93), 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 43 [2025-02-05 14:58:18,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:18,606 INFO L225 Difference]: With dead ends: 92 [2025-02-05 14:58:18,606 INFO L226 Difference]: Without dead ends: 65 [2025-02-05 14:58:18,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 24 SyntacticMatches, 16 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4378 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1179, Invalid=5463, Unknown=0, NotChecked=0, Total=6642 [2025-02-05 14:58:18,607 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:18,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 135 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:58:18,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-02-05 14:58:18,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2025-02-05 14:58:18,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.078125) internal successors, (69), 64 states have internal predecessors, (69), 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) [2025-02-05 14:58:18,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2025-02-05 14:58:18,616 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 43 [2025-02-05 14:58:18,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:18,616 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2025-02-05 14:58:18,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.1625) internal successors, (93), 80 states have internal predecessors, (93), 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) [2025-02-05 14:58:18,617 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2025-02-05 14:58:18,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-05 14:58:18,617 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:18,617 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:18,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2025-02-05 14:58:18,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:18,821 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:18,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:18,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1404161203, now seen corresponding path program 23 times [2025-02-05 14:58:18,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:18,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508628144] [2025-02-05 14:58:18,821 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:58:18,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:18,824 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 8 equivalence classes. [2025-02-05 14:58:18,827 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 43 of 43 statements. [2025-02-05 14:58:18,827 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-02-05 14:58:18,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:19,439 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 91 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:19,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:19,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508628144] [2025-02-05 14:58:19,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508628144] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:19,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377012620] [2025-02-05 14:58:19,440 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:58:19,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:19,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:19,442 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:19,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2025-02-05 14:58:19,488 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 43 statements into 8 equivalence classes. [2025-02-05 14:58:19,501 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 43 of 43 statements. [2025-02-05 14:58:19,502 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-02-05 14:58:19,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:19,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-02-05 14:58:19,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 91 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:20,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 91 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:20,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377012620] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:20,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:20,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 79 [2025-02-05 14:58:20,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215757301] [2025-02-05 14:58:20,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:20,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2025-02-05 14:58:20,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:20,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2025-02-05 14:58:20,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1137, Invalid=5025, Unknown=0, NotChecked=0, Total=6162 [2025-02-05 14:58:20,840 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 79 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 79 states have internal predecessors, (93), 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) [2025-02-05 14:58:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:21,038 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2025-02-05 14:58:21,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-05 14:58:21,038 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 79 states have internal predecessors, (93), 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 43 [2025-02-05 14:58:21,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:21,039 INFO L225 Difference]: With dead ends: 75 [2025-02-05 14:58:21,039 INFO L226 Difference]: Without dead ends: 68 [2025-02-05 14:58:21,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 26 SyntacticMatches, 15 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4181 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1185, Invalid=5135, Unknown=0, NotChecked=0, Total=6320 [2025-02-05 14:58:21,040 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:21,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 141 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:58:21,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-05 14:58:21,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2025-02-05 14:58:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 65 states have internal predecessors, (70), 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) [2025-02-05 14:58:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2025-02-05 14:58:21,050 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 43 [2025-02-05 14:58:21,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:21,050 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2025-02-05 14:58:21,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 79 states have internal predecessors, (93), 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) [2025-02-05 14:58:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2025-02-05 14:58:21,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-02-05 14:58:21,051 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:21,051 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:21,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2025-02-05 14:58:21,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2025-02-05 14:58:21,255 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:21,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:21,255 INFO L85 PathProgramCache]: Analyzing trace with hash -678430827, now seen corresponding path program 24 times [2025-02-05 14:58:21,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:21,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569690049] [2025-02-05 14:58:21,255 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:58:21,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:21,259 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 8 equivalence classes. [2025-02-05 14:58:21,262 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 44 of 44 statements. [2025-02-05 14:58:21,262 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-02-05 14:58:21,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 78 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:21,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:21,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569690049] [2025-02-05 14:58:21,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569690049] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:21,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607717686] [2025-02-05 14:58:21,965 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:58:21,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:21,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:21,969 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:21,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2025-02-05 14:58:22,018 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 8 equivalence classes. [2025-02-05 14:58:22,033 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 44 of 44 statements. [2025-02-05 14:58:22,033 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-02-05 14:58:22,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:22,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-05 14:58:22,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 91 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:22,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:23,387 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:23,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607717686] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:23,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:23,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 79 [2025-02-05 14:58:23,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331172773] [2025-02-05 14:58:23,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:23,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2025-02-05 14:58:23,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:23,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2025-02-05 14:58:23,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1166, Invalid=4996, Unknown=0, NotChecked=0, Total=6162 [2025-02-05 14:58:23,389 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 79 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 79 states have internal predecessors, (95), 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) [2025-02-05 14:58:23,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:23,527 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2025-02-05 14:58:23,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-02-05 14:58:23,528 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 79 states have internal predecessors, (95), 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 44 [2025-02-05 14:58:23,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:23,529 INFO L225 Difference]: With dead ends: 94 [2025-02-05 14:58:23,529 INFO L226 Difference]: Without dead ends: 87 [2025-02-05 14:58:23,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 29 SyntacticMatches, 14 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4278 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1214, Invalid=5106, Unknown=0, NotChecked=0, Total=6320 [2025-02-05 14:58:23,529 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 11 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:23,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 112 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:58:23,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2025-02-05 14:58:23,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 67. [2025-02-05 14:58:23,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 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) [2025-02-05 14:58:23,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2025-02-05 14:58:23,540 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 44 [2025-02-05 14:58:23,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:23,540 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2025-02-05 14:58:23,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 79 states have internal predecessors, (95), 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) [2025-02-05 14:58:23,540 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2025-02-05 14:58:23,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-02-05 14:58:23,541 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:23,541 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:23,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2025-02-05 14:58:23,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,50 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:23,741 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:23,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:23,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1529562775, now seen corresponding path program 24 times [2025-02-05 14:58:23,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:23,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363937698] [2025-02-05 14:58:23,741 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:58:23,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:23,744 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 8 equivalence classes. [2025-02-05 14:58:23,748 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 44 of 44 statements. [2025-02-05 14:58:23,748 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-02-05 14:58:23,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 92 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:24,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:24,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363937698] [2025-02-05 14:58:24,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363937698] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:24,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68200785] [2025-02-05 14:58:24,240 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:58:24,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:24,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:24,242 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:24,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2025-02-05 14:58:24,285 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 8 equivalence classes. [2025-02-05 14:58:24,300 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 44 of 44 statements. [2025-02-05 14:58:24,301 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-02-05 14:58:24,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:24,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-05 14:58:24,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:25,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 105 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:25,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68200785] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:25,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:25,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 79 [2025-02-05 14:58:25,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453746366] [2025-02-05 14:58:25,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:25,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2025-02-05 14:58:25,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:25,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2025-02-05 14:58:25,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=5009, Unknown=0, NotChecked=0, Total=6162 [2025-02-05 14:58:25,589 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 79 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 79 states have internal predecessors, (94), 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) [2025-02-05 14:58:25,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:25,718 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2025-02-05 14:58:25,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-05 14:58:25,718 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 79 states have internal predecessors, (94), 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 44 [2025-02-05 14:58:25,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:25,719 INFO L225 Difference]: With dead ends: 93 [2025-02-05 14:58:25,719 INFO L226 Difference]: Without dead ends: 66 [2025-02-05 14:58:25,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 30 SyntacticMatches, 13 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4203 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1176, Invalid=5144, Unknown=0, NotChecked=0, Total=6320 [2025-02-05 14:58:25,719 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:25,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 103 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:58:25,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-02-05 14:58:25,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2025-02-05 14:58:25,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 65 states have internal predecessors, (69), 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) [2025-02-05 14:58:25,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2025-02-05 14:58:25,730 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 44 [2025-02-05 14:58:25,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:25,730 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2025-02-05 14:58:25,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 79 states have internal predecessors, (94), 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) [2025-02-05 14:58:25,730 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2025-02-05 14:58:25,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-05 14:58:25,730 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:25,730 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:25,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2025-02-05 14:58:25,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,51 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:25,940 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:25,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:25,941 INFO L85 PathProgramCache]: Analyzing trace with hash 534844755, now seen corresponding path program 25 times [2025-02-05 14:58:25,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:25,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400760796] [2025-02-05 14:58:25,941 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:58:25,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:25,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-05 14:58:25,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-05 14:58:25,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:58:25,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 91 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:26,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:26,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400760796] [2025-02-05 14:58:26,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400760796] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:26,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008141387] [2025-02-05 14:58:26,470 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:58:26,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:26,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:26,472 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:26,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2025-02-05 14:58:26,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-05 14:58:26,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-05 14:58:26,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:58:26,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:26,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-05 14:58:26,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:27,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:28,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008141387] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:28,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:28,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 86 [2025-02-05 14:58:28,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733937016] [2025-02-05 14:58:28,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:28,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2025-02-05 14:58:28,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:28,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2025-02-05 14:58:28,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1298, Invalid=6012, Unknown=0, NotChecked=0, Total=7310 [2025-02-05 14:58:28,047 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 86 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 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) [2025-02-05 14:58:28,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:28,255 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2025-02-05 14:58:28,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-05 14:58:28,255 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 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 45 [2025-02-05 14:58:28,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:28,256 INFO L225 Difference]: With dead ends: 96 [2025-02-05 14:58:28,256 INFO L226 Difference]: Without dead ends: 68 [2025-02-05 14:58:28,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 24 SyntacticMatches, 16 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5103 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1332, Invalid=6324, Unknown=0, NotChecked=0, Total=7656 [2025-02-05 14:58:28,257 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:28,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 105 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:58:28,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-05 14:58:28,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2025-02-05 14:58:28,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 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) [2025-02-05 14:58:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2025-02-05 14:58:28,278 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 45 [2025-02-05 14:58:28,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:28,281 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2025-02-05 14:58:28,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 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) [2025-02-05 14:58:28,282 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2025-02-05 14:58:28,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-05 14:58:28,282 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:28,282 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:28,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2025-02-05 14:58:28,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2025-02-05 14:58:28,483 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:28,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:28,483 INFO L85 PathProgramCache]: Analyzing trace with hash 537235411, now seen corresponding path program 25 times [2025-02-05 14:58:28,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:28,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965056956] [2025-02-05 14:58:28,483 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:58:28,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:28,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-05 14:58:28,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-05 14:58:28,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:58:28,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 91 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:29,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:29,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965056956] [2025-02-05 14:58:29,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965056956] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:29,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327854318] [2025-02-05 14:58:29,247 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:58:29,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:29,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:29,250 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:29,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2025-02-05 14:58:29,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-05 14:58:29,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-05 14:58:29,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:58:29,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:29,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-05 14:58:29,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:30,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 105 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:30,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327854318] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:30,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:30,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 85 [2025-02-05 14:58:30,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681930548] [2025-02-05 14:58:30,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:30,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2025-02-05 14:58:30,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:30,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2025-02-05 14:58:30,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=5837, Unknown=0, NotChecked=0, Total=7140 [2025-02-05 14:58:30,703 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 85 states, 85 states have (on average 1.1764705882352942) internal successors, (100), 85 states have internal predecessors, (100), 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) [2025-02-05 14:58:30,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:30,877 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2025-02-05 14:58:30,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-05 14:58:30,878 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 1.1764705882352942) internal successors, (100), 85 states have internal predecessors, (100), 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 45 [2025-02-05 14:58:30,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:30,878 INFO L225 Difference]: With dead ends: 78 [2025-02-05 14:58:30,878 INFO L226 Difference]: Without dead ends: 71 [2025-02-05 14:58:30,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 26 SyntacticMatches, 15 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4906 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1353, Invalid=5957, Unknown=0, NotChecked=0, Total=7310 [2025-02-05 14:58:30,883 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:30,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 121 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:58:30,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-02-05 14:58:30,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2025-02-05 14:58:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 68 states have internal predecessors, (73), 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) [2025-02-05 14:58:30,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2025-02-05 14:58:30,902 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 45 [2025-02-05 14:58:30,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:30,905 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2025-02-05 14:58:30,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 1.1764705882352942) internal successors, (100), 85 states have internal predecessors, (100), 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) [2025-02-05 14:58:30,906 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2025-02-05 14:58:30,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-05 14:58:30,906 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:30,906 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:30,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2025-02-05 14:58:31,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2025-02-05 14:58:31,106 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:31,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:31,107 INFO L85 PathProgramCache]: Analyzing trace with hash -162532457, now seen corresponding path program 26 times [2025-02-05 14:58:31,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:31,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863992907] [2025-02-05 14:58:31,107 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:58:31,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:31,110 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-02-05 14:58:31,113 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-02-05 14:58:31,113 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:58:31,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:31,852 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 91 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:31,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:31,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863992907] [2025-02-05 14:58:31,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863992907] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:31,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676892906] [2025-02-05 14:58:31,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:58:31,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:31,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:31,854 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:31,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2025-02-05 14:58:31,898 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-02-05 14:58:31,912 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-02-05 14:58:31,912 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:58:31,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:31,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-05 14:58:31,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 105 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:32,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:33,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676892906] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:33,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:33,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 84 [2025-02-05 14:58:33,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985814819] [2025-02-05 14:58:33,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:33,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2025-02-05 14:58:33,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:33,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2025-02-05 14:58:33,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1315, Invalid=5657, Unknown=0, NotChecked=0, Total=6972 [2025-02-05 14:58:33,541 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 84 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 84 states have internal predecessors, (100), 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) [2025-02-05 14:58:33,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:33,734 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2025-02-05 14:58:33,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-05 14:58:33,735 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 84 states have internal predecessors, (100), 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 46 [2025-02-05 14:58:33,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:33,735 INFO L225 Difference]: With dead ends: 98 [2025-02-05 14:58:33,735 INFO L226 Difference]: Without dead ends: 91 [2025-02-05 14:58:33,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 29 SyntacticMatches, 15 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4876 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1366, Invalid=5774, Unknown=0, NotChecked=0, Total=7140 [2025-02-05 14:58:33,736 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:33,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 177 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:58:33,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-02-05 14:58:33,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 70. [2025-02-05 14:58:33,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 69 states have internal predecessors, (74), 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) [2025-02-05 14:58:33,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2025-02-05 14:58:33,747 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 46 [2025-02-05 14:58:33,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:33,747 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2025-02-05 14:58:33,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 84 states have internal predecessors, (100), 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) [2025-02-05 14:58:33,747 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2025-02-05 14:58:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-05 14:58:33,748 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:33,748 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:33,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2025-02-05 14:58:33,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2025-02-05 14:58:33,952 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:33,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:33,952 INFO L85 PathProgramCache]: Analyzing trace with hash 424666999, now seen corresponding path program 26 times [2025-02-05 14:58:33,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:33,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643637541] [2025-02-05 14:58:33,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:58:33,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:33,955 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-02-05 14:58:33,958 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-02-05 14:58:33,958 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:58:33,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 106 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:34,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:34,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643637541] [2025-02-05 14:58:34,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643637541] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:34,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467572849] [2025-02-05 14:58:34,531 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:58:34,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:34,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:34,534 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:34,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2025-02-05 14:58:34,576 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-02-05 14:58:34,589 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-02-05 14:58:34,589 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:58:34,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:34,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-05 14:58:34,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:35,412 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:35,412 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 120 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:36,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467572849] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:36,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:36,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 84 [2025-02-05 14:58:36,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305558936] [2025-02-05 14:58:36,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:36,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2025-02-05 14:58:36,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:36,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2025-02-05 14:58:36,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1301, Invalid=5671, Unknown=0, NotChecked=0, Total=6972 [2025-02-05 14:58:36,138 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 84 states, 84 states have (on average 1.1785714285714286) internal successors, (99), 84 states have internal predecessors, (99), 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) [2025-02-05 14:58:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:36,339 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2025-02-05 14:58:36,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-05 14:58:36,340 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.1785714285714286) internal successors, (99), 84 states have internal predecessors, (99), 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 46 [2025-02-05 14:58:36,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:36,340 INFO L225 Difference]: With dead ends: 97 [2025-02-05 14:58:36,340 INFO L226 Difference]: Without dead ends: 69 [2025-02-05 14:58:36,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 30 SyntacticMatches, 14 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4796 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1325, Invalid=5815, Unknown=0, NotChecked=0, Total=7140 [2025-02-05 14:58:36,341 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:36,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 123 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:58:36,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-02-05 14:58:36,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2025-02-05 14:58:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0588235294117647) internal successors, (72), 68 states have internal predecessors, (72), 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) [2025-02-05 14:58:36,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2025-02-05 14:58:36,352 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 46 [2025-02-05 14:58:36,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:36,352 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2025-02-05 14:58:36,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.1785714285714286) internal successors, (99), 84 states have internal predecessors, (99), 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) [2025-02-05 14:58:36,352 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2025-02-05 14:58:36,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-05 14:58:36,352 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:36,352 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:36,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2025-02-05 14:58:36,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,55 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:36,553 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:36,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:36,553 INFO L85 PathProgramCache]: Analyzing trace with hash -652174959, now seen corresponding path program 27 times [2025-02-05 14:58:36,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:36,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634214958] [2025-02-05 14:58:36,553 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:58:36,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:36,556 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 9 equivalence classes. [2025-02-05 14:58:36,560 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 47 of 47 statements. [2025-02-05 14:58:36,560 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-05 14:58:36,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 105 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:37,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:37,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634214958] [2025-02-05 14:58:37,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634214958] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:37,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139210902] [2025-02-05 14:58:37,163 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:58:37,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:37,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:37,165 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:37,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2025-02-05 14:58:37,222 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 9 equivalence classes. [2025-02-05 14:58:37,240 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 47 of 47 statements. [2025-02-05 14:58:37,240 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-05 14:58:37,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:37,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-05 14:58:37,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 120 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:38,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 120 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:38,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139210902] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:38,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:38,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 91 [2025-02-05 14:58:38,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101989972] [2025-02-05 14:58:38,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:38,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2025-02-05 14:58:38,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:38,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2025-02-05 14:58:38,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1454, Invalid=6736, Unknown=0, NotChecked=0, Total=8190 [2025-02-05 14:58:38,869 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 91 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 91 states have internal predecessors, (105), 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) [2025-02-05 14:58:39,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:39,167 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2025-02-05 14:58:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-02-05 14:58:39,168 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 91 states have internal predecessors, (105), 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 47 [2025-02-05 14:58:39,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:39,168 INFO L225 Difference]: With dead ends: 100 [2025-02-05 14:58:39,168 INFO L226 Difference]: Without dead ends: 71 [2025-02-05 14:58:39,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 24 SyntacticMatches, 17 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5755 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1489, Invalid=7067, Unknown=0, NotChecked=0, Total=8556 [2025-02-05 14:58:39,169 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:39,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 161 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:58:39,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-02-05 14:58:39,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2025-02-05 14:58:39,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 70 states have internal predecessors, (75), 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) [2025-02-05 14:58:39,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2025-02-05 14:58:39,184 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 47 [2025-02-05 14:58:39,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:39,184 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2025-02-05 14:58:39,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 91 states have internal predecessors, (105), 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) [2025-02-05 14:58:39,184 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2025-02-05 14:58:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-05 14:58:39,184 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:39,185 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:39,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2025-02-05 14:58:39,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2025-02-05 14:58:39,385 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:39,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:39,386 INFO L85 PathProgramCache]: Analyzing trace with hash 280809907, now seen corresponding path program 27 times [2025-02-05 14:58:39,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:39,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461735975] [2025-02-05 14:58:39,386 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:58:39,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:39,390 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 9 equivalence classes. [2025-02-05 14:58:39,394 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 47 of 47 statements. [2025-02-05 14:58:39,395 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-05 14:58:39,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:40,070 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 105 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:40,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:40,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461735975] [2025-02-05 14:58:40,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461735975] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:40,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067908404] [2025-02-05 14:58:40,070 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:58:40,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:40,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:40,072 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:40,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2025-02-05 14:58:40,118 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 47 statements into 9 equivalence classes. [2025-02-05 14:58:40,134 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 47 of 47 statements. [2025-02-05 14:58:40,135 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-05 14:58:40,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:40,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-05 14:58:40,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 120 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:40,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 120 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:41,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067908404] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:41,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:41,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 90 [2025-02-05 14:58:41,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226677907] [2025-02-05 14:58:41,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:41,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2025-02-05 14:58:41,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:41,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2025-02-05 14:58:41,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1460, Invalid=6550, Unknown=0, NotChecked=0, Total=8010 [2025-02-05 14:58:41,629 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 90 states, 90 states have (on average 1.1666666666666667) internal successors, (105), 90 states have internal predecessors, (105), 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) [2025-02-05 14:58:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:41,785 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2025-02-05 14:58:41,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-02-05 14:58:41,785 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.1666666666666667) internal successors, (105), 90 states have internal predecessors, (105), 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 47 [2025-02-05 14:58:41,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:41,786 INFO L225 Difference]: With dead ends: 81 [2025-02-05 14:58:41,786 INFO L226 Difference]: Without dead ends: 74 [2025-02-05 14:58:41,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 26 SyntacticMatches, 16 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5545 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1513, Invalid=6677, Unknown=0, NotChecked=0, Total=8190 [2025-02-05 14:58:41,786 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:41,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 88 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:58:41,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-02-05 14:58:41,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2025-02-05 14:58:41,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 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) [2025-02-05 14:58:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2025-02-05 14:58:41,798 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 47 [2025-02-05 14:58:41,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:41,798 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2025-02-05 14:58:41,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.1666666666666667) internal successors, (105), 90 states have internal predecessors, (105), 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) [2025-02-05 14:58:41,799 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2025-02-05 14:58:41,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-05 14:58:41,799 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:41,799 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:41,805 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2025-02-05 14:58:41,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2025-02-05 14:58:41,999 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:42,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:42,000 INFO L85 PathProgramCache]: Analyzing trace with hash -816777515, now seen corresponding path program 28 times [2025-02-05 14:58:42,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:42,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391884454] [2025-02-05 14:58:42,000 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:58:42,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:42,008 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 48 statements into 2 equivalence classes. [2025-02-05 14:58:42,013 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-02-05 14:58:42,013 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:58:42,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 120 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:42,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:42,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391884454] [2025-02-05 14:58:42,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391884454] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:42,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605116398] [2025-02-05 14:58:42,664 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:58:42,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:42,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:42,666 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:42,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2025-02-05 14:58:42,711 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 48 statements into 2 equivalence classes. [2025-02-05 14:58:42,727 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-02-05 14:58:42,727 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:58:42,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:42,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-05 14:58:42,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 120 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:43,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:44,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605116398] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:44,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:44,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 86 [2025-02-05 14:58:44,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871413042] [2025-02-05 14:58:44,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:44,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2025-02-05 14:58:44,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:44,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2025-02-05 14:58:44,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1379, Invalid=5931, Unknown=0, NotChecked=0, Total=7310 [2025-02-05 14:58:44,581 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 86 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 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) [2025-02-05 14:58:44,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:44,822 INFO L93 Difference]: Finished difference Result 102 states and 107 transitions. [2025-02-05 14:58:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-02-05 14:58:44,822 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 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 48 [2025-02-05 14:58:44,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:44,822 INFO L225 Difference]: With dead ends: 102 [2025-02-05 14:58:44,823 INFO L226 Difference]: Without dead ends: 95 [2025-02-05 14:58:44,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 29 SyntacticMatches, 18 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4259 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1432, Invalid=6050, Unknown=0, NotChecked=0, Total=7482 [2025-02-05 14:58:44,823 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:44,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 181 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:58:44,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-02-05 14:58:44,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 73. [2025-02-05 14:58:44,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 72 states have internal predecessors, (77), 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) [2025-02-05 14:58:44,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2025-02-05 14:58:44,836 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 48 [2025-02-05 14:58:44,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:44,836 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2025-02-05 14:58:44,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 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) [2025-02-05 14:58:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2025-02-05 14:58:44,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-05 14:58:44,837 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:44,837 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:44,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2025-02-05 14:58:45,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:45,038 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:45,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:45,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1065410967, now seen corresponding path program 28 times [2025-02-05 14:58:45,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:45,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722277136] [2025-02-05 14:58:45,038 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:58:45,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:45,041 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 48 statements into 2 equivalence classes. [2025-02-05 14:58:45,043 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-02-05 14:58:45,043 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:58:45,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:45,742 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:45,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:45,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722277136] [2025-02-05 14:58:45,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722277136] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:45,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906986301] [2025-02-05 14:58:45,743 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:58:45,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:45,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:45,745 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:45,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2025-02-05 14:58:45,790 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 48 statements into 2 equivalence classes. [2025-02-05 14:58:45,804 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-02-05 14:58:45,804 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:58:45,804 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:45,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-05 14:58:45,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:46,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 136 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:47,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906986301] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:47,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:47,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 86 [2025-02-05 14:58:47,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081836207] [2025-02-05 14:58:47,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:47,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2025-02-05 14:58:47,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:47,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2025-02-05 14:58:47,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1379, Invalid=5931, Unknown=0, NotChecked=0, Total=7310 [2025-02-05 14:58:47,608 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 86 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 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) [2025-02-05 14:58:47,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:47,754 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2025-02-05 14:58:47,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-02-05 14:58:47,754 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 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 48 [2025-02-05 14:58:47,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:47,755 INFO L225 Difference]: With dead ends: 101 [2025-02-05 14:58:47,755 INFO L226 Difference]: Without dead ends: 72 [2025-02-05 14:58:47,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 29 SyntacticMatches, 18 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4242 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1402, Invalid=6080, Unknown=0, NotChecked=0, Total=7482 [2025-02-05 14:58:47,755 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:47,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 106 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:58:47,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-02-05 14:58:47,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2025-02-05 14:58:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.056338028169014) internal successors, (75), 71 states have internal predecessors, (75), 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) [2025-02-05 14:58:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2025-02-05 14:58:47,768 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 48 [2025-02-05 14:58:47,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:47,768 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2025-02-05 14:58:47,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 86 states have internal predecessors, (100), 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) [2025-02-05 14:58:47,768 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2025-02-05 14:58:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-02-05 14:58:47,768 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:47,768 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:47,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2025-02-05 14:58:47,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,59 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:47,969 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:47,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:47,970 INFO L85 PathProgramCache]: Analyzing trace with hash 541064723, now seen corresponding path program 29 times [2025-02-05 14:58:47,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:47,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14493736] [2025-02-05 14:58:47,970 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:58:47,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:47,973 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 49 statements into 9 equivalence classes. [2025-02-05 14:58:47,980 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 49 of 49 statements. [2025-02-05 14:58:47,980 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-05 14:58:47,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:48,724 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 136 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:48,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:48,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14493736] [2025-02-05 14:58:48,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14493736] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:48,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977910776] [2025-02-05 14:58:48,725 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:58:48,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:48,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:48,727 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:48,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2025-02-05 14:58:48,775 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 49 statements into 9 equivalence classes. [2025-02-05 14:58:48,790 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 49 of 49 statements. [2025-02-05 14:58:48,790 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-05 14:58:48,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:48,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-02-05 14:58:48,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:58:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 136 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:49,873 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:58:50,885 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 136 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977910776] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:58:50,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:58:50,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 94 [2025-02-05 14:58:50,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092043954] [2025-02-05 14:58:50,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:58:50,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2025-02-05 14:58:50,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:58:50,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2025-02-05 14:58:50,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=7183, Unknown=0, NotChecked=0, Total=8742 [2025-02-05 14:58:50,889 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 94 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 94 states have internal predecessors, (107), 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) [2025-02-05 14:58:51,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:58:51,155 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2025-02-05 14:58:51,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-02-05 14:58:51,156 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 94 states have internal predecessors, (107), 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 49 [2025-02-05 14:58:51,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:58:51,156 INFO L225 Difference]: With dead ends: 104 [2025-02-05 14:58:51,156 INFO L226 Difference]: Without dead ends: 74 [2025-02-05 14:58:51,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 25 SyntacticMatches, 19 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5102 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1559, Invalid=7183, Unknown=0, NotChecked=0, Total=8742 [2025-02-05 14:58:51,157 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:58:51,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 149 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:58:51,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-02-05 14:58:51,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2025-02-05 14:58:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 73 states have internal predecessors, (78), 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) [2025-02-05 14:58:51,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2025-02-05 14:58:51,170 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 49 [2025-02-05 14:58:51,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:58:51,170 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2025-02-05 14:58:51,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 94 states have internal predecessors, (107), 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) [2025-02-05 14:58:51,170 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2025-02-05 14:58:51,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-02-05 14:58:51,171 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:58:51,171 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:58:51,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2025-02-05 14:58:51,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,60 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:51,375 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:58:51,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:58:51,375 INFO L85 PathProgramCache]: Analyzing trace with hash 257699027, now seen corresponding path program 29 times [2025-02-05 14:58:51,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:58:51,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910512662] [2025-02-05 14:58:51,376 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:58:51,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:58:51,379 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 49 statements into 9 equivalence classes. [2025-02-05 14:58:51,383 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 49 of 49 statements. [2025-02-05 14:58:51,383 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-05 14:58:51,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 136 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:58:52,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:58:52,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910512662] [2025-02-05 14:58:52,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910512662] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:58:52,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151870109] [2025-02-05 14:58:52,179 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:58:52,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:58:52,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:58:52,181 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 14:58:52,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2025-02-05 14:58:52,228 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 49 statements into 9 equivalence classes. [2025-02-05 14:58:52,244 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 49 of 49 statements. [2025-02-05 14:58:52,244 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-05 14:58:52,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:58:52,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-02-05 14:58:52,246 INFO L279 TraceCheckSpWp]: Computing forward predicates...