./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash db87c07dbb7452fd246a98fbd617147a32e88270b5156b64dd08a046f6919e1f --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 20:11:46,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 20:11:46,210 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-05 20:11:46,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 20:11:46,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 20:11:46,238 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 20:11:46,238 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 20:11:46,238 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 20:11:46,239 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 20:11:46,239 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 20:11:46,239 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 20:11:46,239 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 20:11:46,239 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 20:11:46,240 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 20:11:46,241 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 20:11:46,241 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 20:11:46,241 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 20:11:46,241 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 20:11:46,241 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 20:11:46,241 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 20:11:46,241 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 20:11:46,241 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 20:11:46,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 20:11:46,241 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 20:11:46,241 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 20:11:46,242 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 20:11:46,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 20:11:46,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 20:11:46,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 20:11:46,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 20:11:46,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 20:11:46,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 20:11:46,243 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 20:11:46,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 20:11:46,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 20:11:46,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 20:11:46,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 20:11:46,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 20:11:46,243 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 20:11:46,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 20:11:46,243 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db87c07dbb7452fd246a98fbd617147a32e88270b5156b64dd08a046f6919e1f [2025-02-05 20:11:46,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 20:11:46,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 20:11:46,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 20:11:46,506 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 20:11:46,506 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 20:11:46,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2025-02-05 20:11:47,633 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/012321ae1/1ab6062659804df385d1a2f66b00f219/FLAG431366596 [2025-02-05 20:11:47,878 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 20:11:47,879 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2025-02-05 20:11:47,903 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/012321ae1/1ab6062659804df385d1a2f66b00f219/FLAG431366596 [2025-02-05 20:11:48,211 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/012321ae1/1ab6062659804df385d1a2f66b00f219 [2025-02-05 20:11:48,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 20:11:48,217 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 20:11:48,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 20:11:48,218 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 20:11:48,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 20:11:48,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 08:11:48" (1/1) ... [2025-02-05 20:11:48,224 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61459e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48, skipping insertion in model container [2025-02-05 20:11:48,224 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 08:11:48" (1/1) ... [2025-02-05 20:11:48,236 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 20:11:48,331 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/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c[1259,1272] [2025-02-05 20:11:48,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 20:11:48,374 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 20:11:48,382 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/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c[1259,1272] [2025-02-05 20:11:48,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 20:11:48,432 INFO L204 MainTranslator]: Completed translation [2025-02-05 20:11:48,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48 WrapperNode [2025-02-05 20:11:48,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 20:11:48,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 20:11:48,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 20:11:48,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 20:11:48,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48" (1/1) ... [2025-02-05 20:11:48,444 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48" (1/1) ... [2025-02-05 20:11:48,484 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 427 [2025-02-05 20:11:48,485 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 20:11:48,485 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 20:11:48,485 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 20:11:48,485 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 20:11:48,491 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48" (1/1) ... [2025-02-05 20:11:48,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48" (1/1) ... [2025-02-05 20:11:48,496 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48" (1/1) ... [2025-02-05 20:11:48,507 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 20:11:48,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48" (1/1) ... [2025-02-05 20:11:48,508 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48" (1/1) ... [2025-02-05 20:11:48,517 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48" (1/1) ... [2025-02-05 20:11:48,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48" (1/1) ... [2025-02-05 20:11:48,520 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48" (1/1) ... [2025-02-05 20:11:48,521 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48" (1/1) ... [2025-02-05 20:11:48,525 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 20:11:48,526 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 20:11:48,526 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 20:11:48,526 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 20:11:48,527 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48" (1/1) ... [2025-02-05 20:11:48,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 20:11:48,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 20:11:48,548 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 20:11:48,550 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 20:11:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 20:11:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 20:11:48,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 20:11:48,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 20:11:48,625 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 20:11:48,626 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 20:11:49,353 INFO L? ?]: Removed 211 outVars from TransFormulas that were not future-live. [2025-02-05 20:11:49,353 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 20:11:49,385 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 20:11:49,385 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 20:11:49,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 08:11:49 BoogieIcfgContainer [2025-02-05 20:11:49,386 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 20:11:49,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 20:11:49,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 20:11:49,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 20:11:49,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 08:11:48" (1/3) ... [2025-02-05 20:11:49,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569db78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 08:11:49, skipping insertion in model container [2025-02-05 20:11:49,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:11:48" (2/3) ... [2025-02-05 20:11:49,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569db78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 08:11:49, skipping insertion in model container [2025-02-05 20:11:49,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 08:11:49" (3/3) ... [2025-02-05 20:11:49,392 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2025-02-05 20:11:49,402 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 20:11:49,403 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vis_QF_BV_s1269b_p3.c that has 1 procedures, 110 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 20:11:49,434 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 20:11:49,451 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;@3b010473, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 20:11:49,451 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 20:11:49,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 1.4907407407407407) internal successors, (161), 109 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:11:49,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-05 20:11:49,460 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:11:49,461 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:11:49,461 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:11:49,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:11:49,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1533790119, now seen corresponding path program 1 times [2025-02-05 20:11:49,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:11:49,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111624651] [2025-02-05 20:11:49,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:49,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:11:49,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-05 20:11:49,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-05 20:11:49,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:49,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:49,889 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 20:11:49,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:11:49,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111624651] [2025-02-05 20:11:49,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111624651] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:11:49,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:11:49,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 20:11:49,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416642258] [2025-02-05 20:11:49,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:11:49,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 20:11:49,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:11:49,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 20:11:49,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 20:11:49,912 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 1.4907407407407407) internal successors, (161), 109 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:11:50,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:11:50,034 INFO L93 Difference]: Finished difference Result 201 states and 297 transitions. [2025-02-05 20:11:50,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 20:11:50,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-02-05 20:11:50,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:11:50,040 INFO L225 Difference]: With dead ends: 201 [2025-02-05 20:11:50,040 INFO L226 Difference]: Without dead ends: 109 [2025-02-05 20:11:50,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 20:11:50,044 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:11:50,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:11:50,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-02-05 20:11:50,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2025-02-05 20:11:50,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4722222222222223) internal successors, (159), 108 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 20:11:50,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2025-02-05 20:11:50,080 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 23 [2025-02-05 20:11:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:11:50,080 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2025-02-05 20:11:50,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:11:50,081 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2025-02-05 20:11:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 20:11:50,081 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:11:50,081 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:11:50,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 20:11:50,082 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:11:50,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:11:50,083 INFO L85 PathProgramCache]: Analyzing trace with hash -298174176, now seen corresponding path program 1 times [2025-02-05 20:11:50,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:11:50,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159261048] [2025-02-05 20:11:50,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:50,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:11:50,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 20:11:50,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 20:11:50,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:50,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:50,219 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 20:11:50,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:11:50,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159261048] [2025-02-05 20:11:50,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159261048] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:11:50,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:11:50,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 20:11:50,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204167526] [2025-02-05 20:11:50,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:11:50,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 20:11:50,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:11:50,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 20:11:50,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 20:11:50,222 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:11:50,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:11:50,298 INFO L93 Difference]: Finished difference Result 202 states and 295 transitions. [2025-02-05 20:11:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 20:11:50,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-02-05 20:11:50,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:11:50,299 INFO L225 Difference]: With dead ends: 202 [2025-02-05 20:11:50,299 INFO L226 Difference]: Without dead ends: 111 [2025-02-05 20:11:50,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 20:11:50,300 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:11:50,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:11:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2025-02-05 20:11:50,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2025-02-05 20:11:50,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4636363636363636) internal successors, (161), 110 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:11:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 161 transitions. [2025-02-05 20:11:50,305 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 161 transitions. Word has length 24 [2025-02-05 20:11:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:11:50,305 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 161 transitions. [2025-02-05 20:11:50,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:11:50,305 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 161 transitions. [2025-02-05 20:11:50,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-05 20:11:50,305 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:11:50,305 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:11:50,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 20:11:50,306 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:11:50,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:11:50,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1278044468, now seen corresponding path program 1 times [2025-02-05 20:11:50,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:11:50,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455630203] [2025-02-05 20:11:50,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:50,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:11:50,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-05 20:11:50,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 20:11:50,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:50,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:50,529 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 20:11:50,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:11:50,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455630203] [2025-02-05 20:11:50,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455630203] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:11:50,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:11:50,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 20:11:50,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920827429] [2025-02-05 20:11:50,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:11:50,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 20:11:50,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:11:50,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 20:11:50,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 20:11:50,531 INFO L87 Difference]: Start difference. First operand 111 states and 161 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 20:11:50,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:11:50,671 INFO L93 Difference]: Finished difference Result 215 states and 313 transitions. [2025-02-05 20:11:50,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 20:11:50,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 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 20:11:50,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:11:50,674 INFO L225 Difference]: With dead ends: 215 [2025-02-05 20:11:50,674 INFO L226 Difference]: Without dead ends: 122 [2025-02-05 20:11:50,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-05 20:11:50,675 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 26 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 712 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 20:11:50,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 712 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:11:50,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2025-02-05 20:11:50,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2025-02-05 20:11:50,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.45) internal successors, (174), 120 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 20:11:50,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 174 transitions. [2025-02-05 20:11:50,680 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 174 transitions. Word has length 25 [2025-02-05 20:11:50,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:11:50,681 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 174 transitions. [2025-02-05 20:11:50,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 20:11:50,681 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 174 transitions. [2025-02-05 20:11:50,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-05 20:11:50,681 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:11:50,681 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:11:50,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 20:11:50,681 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:11:50,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:11:50,682 INFO L85 PathProgramCache]: Analyzing trace with hash 43748010, now seen corresponding path program 1 times [2025-02-05 20:11:50,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:11:50,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315423931] [2025-02-05 20:11:50,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:50,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:11:50,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-05 20:11:50,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 20:11:50,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:50,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:50,794 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 20:11:50,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:11:50,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315423931] [2025-02-05 20:11:50,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315423931] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:11:50,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:11:50,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 20:11:50,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512386877] [2025-02-05 20:11:50,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:11:50,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 20:11:50,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:11:50,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 20:11:50,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 20:11:50,795 INFO L87 Difference]: Start difference. First operand 121 states and 174 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:11:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:11:50,941 INFO L93 Difference]: Finished difference Result 295 states and 424 transitions. [2025-02-05 20:11:50,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 20:11:50,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-02-05 20:11:50,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:11:50,943 INFO L225 Difference]: With dead ends: 295 [2025-02-05 20:11:50,943 INFO L226 Difference]: Without dead ends: 195 [2025-02-05 20:11:50,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-05 20:11:50,944 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 127 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:11:50,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 689 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:11:50,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2025-02-05 20:11:50,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 122. [2025-02-05 20:11:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.43801652892562) internal successors, (174), 121 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 20:11:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 174 transitions. [2025-02-05 20:11:50,949 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 174 transitions. Word has length 26 [2025-02-05 20:11:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:11:50,949 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 174 transitions. [2025-02-05 20:11:50,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:11:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 174 transitions. [2025-02-05 20:11:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-05 20:11:50,950 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:11:50,950 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:11:50,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 20:11:50,950 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:11:50,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:11:50,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1441931835, now seen corresponding path program 1 times [2025-02-05 20:11:50,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:11:50,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034053716] [2025-02-05 20:11:50,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:50,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:11:50,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-05 20:11:50,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 20:11:50,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:50,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:51,124 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 20:11:51,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:11:51,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034053716] [2025-02-05 20:11:51,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034053716] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:11:51,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:11:51,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-05 20:11:51,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909710713] [2025-02-05 20:11:51,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:11:51,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 20:11:51,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:11:51,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 20:11:51,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 20:11:51,126 INFO L87 Difference]: Start difference. First operand 122 states and 174 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:11:51,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:11:51,325 INFO L93 Difference]: Finished difference Result 298 states and 429 transitions. [2025-02-05 20:11:51,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 20:11:51,325 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-02-05 20:11:51,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:11:51,326 INFO L225 Difference]: With dead ends: 298 [2025-02-05 20:11:51,326 INFO L226 Difference]: Without dead ends: 205 [2025-02-05 20:11:51,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2025-02-05 20:11:51,327 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 140 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 20:11:51,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 916 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 20:11:51,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-02-05 20:11:51,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 124. [2025-02-05 20:11:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.4308943089430894) internal successors, (176), 123 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 20:11:51,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 176 transitions. [2025-02-05 20:11:51,332 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 176 transitions. Word has length 26 [2025-02-05 20:11:51,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:11:51,332 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 176 transitions. [2025-02-05 20:11:51,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:11:51,333 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 176 transitions. [2025-02-05 20:11:51,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-05 20:11:51,333 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:11:51,333 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:11:51,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 20:11:51,333 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:11:51,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:11:51,334 INFO L85 PathProgramCache]: Analyzing trace with hash 685540591, now seen corresponding path program 1 times [2025-02-05 20:11:51,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:11:51,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225203181] [2025-02-05 20:11:51,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:51,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:11:51,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-05 20:11:51,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-05 20:11:51,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:51,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:51,411 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 20:11:51,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:11:51,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225203181] [2025-02-05 20:11:51,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225203181] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:11:51,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:11:51,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 20:11:51,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819405433] [2025-02-05 20:11:51,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:11:51,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 20:11:51,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:11:51,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 20:11:51,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 20:11:51,412 INFO L87 Difference]: Start difference. First operand 124 states and 176 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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 20:11:51,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:11:51,494 INFO L93 Difference]: Finished difference Result 283 states and 405 transitions. [2025-02-05 20:11:51,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 20:11:51,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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 27 [2025-02-05 20:11:51,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:11:51,495 INFO L225 Difference]: With dead ends: 283 [2025-02-05 20:11:51,495 INFO L226 Difference]: Without dead ends: 181 [2025-02-05 20:11:51,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 20:11:51,496 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 113 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:11:51,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 479 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:11:51,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-02-05 20:11:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 120. [2025-02-05 20:11:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.4285714285714286) internal successors, (170), 119 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 20:11:51,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 170 transitions. [2025-02-05 20:11:51,500 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 170 transitions. Word has length 27 [2025-02-05 20:11:51,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:11:51,500 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 170 transitions. [2025-02-05 20:11:51,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 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 20:11:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 170 transitions. [2025-02-05 20:11:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-02-05 20:11:51,501 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:11:51,502 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:11:51,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-05 20:11:51,502 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:11:51,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:11:51,502 INFO L85 PathProgramCache]: Analyzing trace with hash -24619079, now seen corresponding path program 1 times [2025-02-05 20:11:51,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:11:51,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101133425] [2025-02-05 20:11:51,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:51,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:11:51,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-02-05 20:11:51,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-02-05 20:11:51,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:51,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:51,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:11:51,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:11:51,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101133425] [2025-02-05 20:11:51,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101133425] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:11:51,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:11:51,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 20:11:51,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259386731] [2025-02-05 20:11:51,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:11:51,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 20:11:51,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:11:51,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 20:11:51,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-05 20:11:51,796 INFO L87 Difference]: Start difference. First operand 120 states and 170 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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 20:11:51,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:11:51,911 INFO L93 Difference]: Finished difference Result 277 states and 399 transitions. [2025-02-05 20:11:51,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 20:11:51,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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) Word has length 71 [2025-02-05 20:11:51,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:11:51,912 INFO L225 Difference]: With dead ends: 277 [2025-02-05 20:11:51,913 INFO L226 Difference]: Without dead ends: 184 [2025-02-05 20:11:51,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-05 20:11:51,913 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 116 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:11:51,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 607 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:11:51,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2025-02-05 20:11:51,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 137. [2025-02-05 20:11:51,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.411764705882353) internal successors, (192), 136 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 20:11:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 192 transitions. [2025-02-05 20:11:51,917 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 192 transitions. Word has length 71 [2025-02-05 20:11:51,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:11:51,917 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 192 transitions. [2025-02-05 20:11:51,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 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 20:11:51,918 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 192 transitions. [2025-02-05 20:11:51,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-05 20:11:51,919 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:11:51,919 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:11:51,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-05 20:11:51,919 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:11:51,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:11:51,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1919698432, now seen corresponding path program 1 times [2025-02-05 20:11:51,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:11:51,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837630348] [2025-02-05 20:11:51,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:51,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:11:51,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-02-05 20:11:51,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-02-05 20:11:51,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:51,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:11:52,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:11:52,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837630348] [2025-02-05 20:11:52,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837630348] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:11:52,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:11:52,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 20:11:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958310495] [2025-02-05 20:11:52,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:11:52,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 20:11:52,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:11:52,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 20:11:52,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 20:11:52,081 INFO L87 Difference]: Start difference. First operand 137 states and 192 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 20:11:52,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:11:52,162 INFO L93 Difference]: Finished difference Result 267 states and 382 transitions. [2025-02-05 20:11:52,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 20:11:52,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) Word has length 72 [2025-02-05 20:11:52,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:11:52,164 INFO L225 Difference]: With dead ends: 267 [2025-02-05 20:11:52,164 INFO L226 Difference]: Without dead ends: 174 [2025-02-05 20:11:52,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 20:11:52,165 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 83 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:11:52,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 466 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:11:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-02-05 20:11:52,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 137. [2025-02-05 20:11:52,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.4044117647058822) internal successors, (191), 136 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 20:11:52,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 191 transitions. [2025-02-05 20:11:52,168 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 191 transitions. Word has length 72 [2025-02-05 20:11:52,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:11:52,168 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 191 transitions. [2025-02-05 20:11:52,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 20:11:52,168 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 191 transitions. [2025-02-05 20:11:52,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-05 20:11:52,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:11:52,169 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:11:52,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-05 20:11:52,170 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:11:52,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:11:52,170 INFO L85 PathProgramCache]: Analyzing trace with hash 2041430917, now seen corresponding path program 1 times [2025-02-05 20:11:52,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:11:52,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045407927] [2025-02-05 20:11:52,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:52,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:11:52,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-02-05 20:11:52,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-02-05 20:11:52,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:52,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:52,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:11:52,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:11:52,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045407927] [2025-02-05 20:11:52,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045407927] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 20:11:52,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766192207] [2025-02-05 20:11:52,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:52,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:11:52,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 20:11:52,667 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 20:11:52,676 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 20:11:52,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-02-05 20:11:52,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-02-05 20:11:52,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:52,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:52,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-05 20:11:52,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 20:11:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:11:53,020 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 20:11:53,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766192207] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:11:53,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 20:11:53,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2025-02-05 20:11:53,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242050334] [2025-02-05 20:11:53,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:11:53,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 20:11:53,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:11:53,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 20:11:53,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2025-02-05 20:11:53,022 INFO L87 Difference]: Start difference. First operand 137 states and 191 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 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 20:11:53,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:11:53,236 INFO L93 Difference]: Finished difference Result 283 states and 405 transitions. [2025-02-05 20:11:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 20:11:53,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 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) Word has length 72 [2025-02-05 20:11:53,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:11:53,238 INFO L225 Difference]: With dead ends: 283 [2025-02-05 20:11:53,238 INFO L226 Difference]: Without dead ends: 190 [2025-02-05 20:11:53,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2025-02-05 20:11:53,240 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 104 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:11:53,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 916 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:11:53,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2025-02-05 20:11:53,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 149. [2025-02-05 20:11:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3986486486486487) internal successors, (207), 148 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 20:11:53,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 207 transitions. [2025-02-05 20:11:53,244 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 207 transitions. Word has length 72 [2025-02-05 20:11:53,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:11:53,244 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 207 transitions. [2025-02-05 20:11:53,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 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 20:11:53,245 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 207 transitions. [2025-02-05 20:11:53,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-02-05 20:11:53,248 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:11:53,248 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:11:53,258 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 20:11:53,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:11:53,453 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:11:53,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:11:53,454 INFO L85 PathProgramCache]: Analyzing trace with hash 370359245, now seen corresponding path program 1 times [2025-02-05 20:11:53,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:11:53,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531865411] [2025-02-05 20:11:53,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:53,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:11:53,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-05 20:11:53,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-05 20:11:53,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:53,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:11:53,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:11:53,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531865411] [2025-02-05 20:11:53,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531865411] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 20:11:53,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834709446] [2025-02-05 20:11:53,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:53,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:11:53,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 20:11:53,779 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 20:11:53,793 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 20:11:53,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-05 20:11:53,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-05 20:11:53,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:53,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:53,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-05 20:11:53,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 20:11:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:11:54,195 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 20:11:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:11:54,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834709446] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 20:11:54,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 20:11:54,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 25 [2025-02-05 20:11:54,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960195601] [2025-02-05 20:11:54,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 20:11:54,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 20:11:54,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:11:54,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 20:11:54,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2025-02-05 20:11:54,486 INFO L87 Difference]: Start difference. First operand 149 states and 207 transitions. Second operand has 25 states, 25 states have (on average 6.64) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:11:54,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:11:54,891 INFO L93 Difference]: Finished difference Result 298 states and 426 transitions. [2025-02-05 20:11:54,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 20:11:54,892 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2025-02-05 20:11:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:11:54,893 INFO L225 Difference]: With dead ends: 298 [2025-02-05 20:11:54,893 INFO L226 Difference]: Without dead ends: 205 [2025-02-05 20:11:54,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2025-02-05 20:11:54,894 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 93 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 20:11:54,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1837 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 20:11:54,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2025-02-05 20:11:54,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2025-02-05 20:11:54,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.4088669950738917) internal successors, (286), 203 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 20:11:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 286 transitions. [2025-02-05 20:11:54,897 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 286 transitions. Word has length 73 [2025-02-05 20:11:54,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:11:54,898 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 286 transitions. [2025-02-05 20:11:54,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 25 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:11:54,898 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 286 transitions. [2025-02-05 20:11:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-05 20:11:54,899 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:11:54,899 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:11:54,908 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 20:11:55,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:11:55,103 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:11:55,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:11:55,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1104712214, now seen corresponding path program 1 times [2025-02-05 20:11:55,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:11:55,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137066421] [2025-02-05 20:11:55,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:55,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:11:55,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-05 20:11:55,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-05 20:11:55,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:55,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:11:55,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:11:55,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137066421] [2025-02-05 20:11:55,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137066421] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 20:11:55,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41338994] [2025-02-05 20:11:55,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:55,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:11:55,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 20:11:55,737 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 20:11:55,738 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 20:11:55,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-05 20:11:55,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-05 20:11:55,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:55,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:55,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-02-05 20:11:55,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 20:11:55,999 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:11:55,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 20:11:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:11:56,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41338994] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 20:11:56,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 20:11:56,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2025-02-05 20:11:56,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737036357] [2025-02-05 20:11:56,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 20:11:56,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-05 20:11:56,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:11:56,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-05 20:11:56,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2025-02-05 20:11:56,345 INFO L87 Difference]: Start difference. First operand 204 states and 286 transitions. Second operand has 27 states, 27 states have (on average 5.37037037037037) internal successors, (145), 27 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 20:11:56,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:11:56,767 INFO L93 Difference]: Finished difference Result 435 states and 619 transitions. [2025-02-05 20:11:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 20:11:56,767 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.37037037037037) internal successors, (145), 27 states have internal predecessors, (145), 0 states have call successors, (0), 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 74 [2025-02-05 20:11:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:11:56,768 INFO L225 Difference]: With dead ends: 435 [2025-02-05 20:11:56,768 INFO L226 Difference]: Without dead ends: 335 [2025-02-05 20:11:56,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2025-02-05 20:11:56,769 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 221 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 20:11:56,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1548 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 20:11:56,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2025-02-05 20:11:56,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 316. [2025-02-05 20:11:56,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.4190476190476191) internal successors, (447), 315 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 20:11:56,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 447 transitions. [2025-02-05 20:11:56,775 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 447 transitions. Word has length 74 [2025-02-05 20:11:56,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:11:56,775 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 447 transitions. [2025-02-05 20:11:56,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.37037037037037) internal successors, (145), 27 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 20:11:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 447 transitions. [2025-02-05 20:11:56,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-05 20:11:56,776 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:11:56,776 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:11:56,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 20:11:56,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:11:56,980 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:11:56,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:11:56,981 INFO L85 PathProgramCache]: Analyzing trace with hash 484597324, now seen corresponding path program 1 times [2025-02-05 20:11:56,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:11:56,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381670377] [2025-02-05 20:11:56,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:56,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:11:56,997 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-05 20:11:57,037 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-05 20:11:57,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:57,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:11:57,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:11:57,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381670377] [2025-02-05 20:11:57,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381670377] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:11:57,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:11:57,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 20:11:57,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205140771] [2025-02-05 20:11:57,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:11:57,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 20:11:57,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:11:57,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 20:11:57,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 20:11:57,247 INFO L87 Difference]: Start difference. First operand 316 states and 447 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 20:11:57,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:11:57,295 INFO L93 Difference]: Finished difference Result 563 states and 803 transitions. [2025-02-05 20:11:57,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 20:11:57,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) Word has length 74 [2025-02-05 20:11:57,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:11:57,297 INFO L225 Difference]: With dead ends: 563 [2025-02-05 20:11:57,297 INFO L226 Difference]: Without dead ends: 316 [2025-02-05 20:11:57,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 20:11:57,298 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 2 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 20:11:57,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 253 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 20:11:57,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2025-02-05 20:11:57,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2025-02-05 20:11:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.4095238095238096) internal successors, (444), 315 states have internal predecessors, (444), 0 states have call successors, (0), 0 states 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 20:11:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 444 transitions. [2025-02-05 20:11:57,306 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 444 transitions. Word has length 74 [2025-02-05 20:11:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:11:57,307 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 444 transitions. [2025-02-05 20:11:57,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 20:11:57,307 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 444 transitions. [2025-02-05 20:11:57,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-05 20:11:57,308 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:11:57,308 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:11:57,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-05 20:11:57,308 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:11:57,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:11:57,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1012391569, now seen corresponding path program 1 times [2025-02-05 20:11:57,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:11:57,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978419991] [2025-02-05 20:11:57,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:57,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:11:57,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-05 20:11:57,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-05 20:11:57,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:57,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:11:57,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:11:57,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978419991] [2025-02-05 20:11:57,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978419991] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:11:57,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:11:57,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-05 20:11:57,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296818494] [2025-02-05 20:11:57,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:11:57,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 20:11:57,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:11:57,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 20:11:57,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-05 20:11:57,657 INFO L87 Difference]: Start difference. First operand 316 states and 444 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 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 20:11:58,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:11:58,294 INFO L93 Difference]: Finished difference Result 619 states and 880 transitions. [2025-02-05 20:11:58,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 20:11:58,295 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 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 75 [2025-02-05 20:11:58,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:11:58,296 INFO L225 Difference]: With dead ends: 619 [2025-02-05 20:11:58,296 INFO L226 Difference]: Without dead ends: 436 [2025-02-05 20:11:58,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2025-02-05 20:11:58,298 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 151 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 20:11:58,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1676 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 20:11:58,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2025-02-05 20:11:58,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 345. [2025-02-05 20:11:58,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.4069767441860466) internal successors, (484), 344 states have internal predecessors, (484), 0 states have call successors, (0), 0 states 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 20:11:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 484 transitions. [2025-02-05 20:11:58,309 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 484 transitions. Word has length 75 [2025-02-05 20:11:58,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:11:58,309 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 484 transitions. [2025-02-05 20:11:58,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 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 20:11:58,310 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 484 transitions. [2025-02-05 20:11:58,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-05 20:11:58,310 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:11:58,310 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:11:58,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-05 20:11:58,310 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:11:58,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:11:58,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2086087747, now seen corresponding path program 1 times [2025-02-05 20:11:58,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:11:58,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325080177] [2025-02-05 20:11:58,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:58,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:11:58,325 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-05 20:11:58,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-05 20:11:58,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:58,408 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:11:58,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:11:58,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325080177] [2025-02-05 20:11:58,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325080177] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 20:11:58,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786420056] [2025-02-05 20:11:58,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:11:58,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:11:58,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 20:11:58,897 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 20:11:58,901 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 20:11:58,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-05 20:11:59,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-05 20:11:59,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:11:59,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:11:59,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-02-05 20:11:59,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 20:11:59,505 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 20:11:59,505 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 20:12:00,332 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 20:12:00,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786420056] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 20:12:00,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 20:12:00,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 16] total 40 [2025-02-05 20:12:00,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980608272] [2025-02-05 20:12:00,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 20:12:00,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-05 20:12:00,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:00,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-05 20:12:00,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1451, Unknown=0, NotChecked=0, Total=1560 [2025-02-05 20:12:00,334 INFO L87 Difference]: Start difference. First operand 345 states and 484 transitions. Second operand has 40 states, 40 states have (on average 4.325) internal successors, (173), 40 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 20:12:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:02,116 INFO L93 Difference]: Finished difference Result 898 states and 1268 transitions. [2025-02-05 20:12:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-02-05 20:12:02,117 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.325) internal successors, (173), 40 states have internal predecessors, (173), 0 states have call successors, (0), 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 76 [2025-02-05 20:12:02,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:02,119 INFO L225 Difference]: With dead ends: 898 [2025-02-05 20:12:02,119 INFO L226 Difference]: Without dead ends: 667 [2025-02-05 20:12:02,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=294, Invalid=4128, Unknown=0, NotChecked=0, Total=4422 [2025-02-05 20:12:02,122 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 477 mSDsluCounter, 4510 mSDsCounter, 0 mSdLazyCounter, 2481 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 4677 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:02,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 4677 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2481 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-05 20:12:02,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2025-02-05 20:12:02,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 472. [2025-02-05 20:12:02,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.4033970276008492) internal successors, (661), 471 states have internal predecessors, (661), 0 states have call successors, (0), 0 states 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 20:12:02,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 661 transitions. [2025-02-05 20:12:02,135 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 661 transitions. Word has length 76 [2025-02-05 20:12:02,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:02,135 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 661 transitions. [2025-02-05 20:12:02,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.325) internal successors, (173), 40 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 20:12:02,136 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 661 transitions. [2025-02-05 20:12:02,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-05 20:12:02,136 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:02,136 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:02,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 20:12:02,337 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,SelfDestructingSolverStorable13 [2025-02-05 20:12:02,337 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:02,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:02,338 INFO L85 PathProgramCache]: Analyzing trace with hash -930582218, now seen corresponding path program 1 times [2025-02-05 20:12:02,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:02,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105418880] [2025-02-05 20:12:02,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:02,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:02,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-05 20:12:02,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-05 20:12:02,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:02,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:02,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:02,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105418880] [2025-02-05 20:12:02,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105418880] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:02,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:02,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-05 20:12:02,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309051030] [2025-02-05 20:12:02,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:02,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 20:12:02,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:02,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 20:12:02,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-05 20:12:02,806 INFO L87 Difference]: Start difference. First operand 472 states and 661 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 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 20:12:03,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:03,046 INFO L93 Difference]: Finished difference Result 853 states and 1202 transitions. [2025-02-05 20:12:03,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 20:12:03,046 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 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) Word has length 76 [2025-02-05 20:12:03,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:03,048 INFO L225 Difference]: With dead ends: 853 [2025-02-05 20:12:03,048 INFO L226 Difference]: Without dead ends: 484 [2025-02-05 20:12:03,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-02-05 20:12:03,049 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 110 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:03,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 993 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 20:12:03,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2025-02-05 20:12:03,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2025-02-05 20:12:03,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 1.3933747412008282) internal successors, (673), 483 states have internal predecessors, (673), 0 states have call successors, (0), 0 states 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 20:12:03,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 673 transitions. [2025-02-05 20:12:03,057 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 673 transitions. Word has length 76 [2025-02-05 20:12:03,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:03,057 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 673 transitions. [2025-02-05 20:12:03,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 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 20:12:03,057 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 673 transitions. [2025-02-05 20:12:03,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-05 20:12:03,057 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:03,058 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:03,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-05 20:12:03,058 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:03,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:03,058 INFO L85 PathProgramCache]: Analyzing trace with hash -882256664, now seen corresponding path program 1 times [2025-02-05 20:12:03,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:03,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955161522] [2025-02-05 20:12:03,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:03,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:03,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-05 20:12:03,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-05 20:12:03,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:03,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:03,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:03,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955161522] [2025-02-05 20:12:03,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955161522] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:03,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:03,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 20:12:03,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120970443] [2025-02-05 20:12:03,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:03,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 20:12:03,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:03,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 20:12:03,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 20:12:03,167 INFO L87 Difference]: Start difference. First operand 484 states and 673 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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 20:12:03,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:03,237 INFO L93 Difference]: Finished difference Result 902 states and 1259 transitions. [2025-02-05 20:12:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 20:12:03,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) Word has length 76 [2025-02-05 20:12:03,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:03,239 INFO L225 Difference]: With dead ends: 902 [2025-02-05 20:12:03,239 INFO L226 Difference]: Without dead ends: 477 [2025-02-05 20:12:03,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 20:12:03,241 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 66 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:03,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 462 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:12:03,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2025-02-05 20:12:03,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2025-02-05 20:12:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 476 states have (on average 1.3865546218487395) internal successors, (660), 476 states have internal predecessors, (660), 0 states have call successors, (0), 0 states 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 20:12:03,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 660 transitions. [2025-02-05 20:12:03,251 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 660 transitions. Word has length 76 [2025-02-05 20:12:03,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:03,251 INFO L471 AbstractCegarLoop]: Abstraction has 477 states and 660 transitions. [2025-02-05 20:12:03,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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 20:12:03,251 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 660 transitions. [2025-02-05 20:12:03,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-02-05 20:12:03,255 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:03,255 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:03,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-05 20:12:03,255 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:03,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:03,255 INFO L85 PathProgramCache]: Analyzing trace with hash 547310130, now seen corresponding path program 1 times [2025-02-05 20:12:03,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:03,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695576726] [2025-02-05 20:12:03,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:03,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:03,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-02-05 20:12:03,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-02-05 20:12:03,302 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:03,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 20:12:03,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:03,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695576726] [2025-02-05 20:12:03,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695576726] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 20:12:03,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535600821] [2025-02-05 20:12:03,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:03,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:12:03,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 20:12:03,657 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 20:12:03,658 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 20:12:03,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-02-05 20:12:03,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-02-05 20:12:03,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:03,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:03,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-02-05 20:12:03,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 20:12:04,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:04,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 20:12:04,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:04,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535600821] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 20:12:04,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 20:12:04,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 32 [2025-02-05 20:12:04,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909846034] [2025-02-05 20:12:04,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 20:12:04,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-05 20:12:04,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:04,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-05 20:12:04,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2025-02-05 20:12:04,569 INFO L87 Difference]: Start difference. First operand 477 states and 660 transitions. Second operand has 32 states, 32 states have (on average 5.1875) internal successors, (166), 32 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:12:05,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:05,296 INFO L93 Difference]: Finished difference Result 1272 states and 1776 transitions. [2025-02-05 20:12:05,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-05 20:12:05,297 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.1875) internal successors, (166), 32 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2025-02-05 20:12:05,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:05,299 INFO L225 Difference]: With dead ends: 1272 [2025-02-05 20:12:05,299 INFO L226 Difference]: Without dead ends: 842 [2025-02-05 20:12:05,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=288, Invalid=2364, Unknown=0, NotChecked=0, Total=2652 [2025-02-05 20:12:05,300 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 774 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:05,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 2007 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 20:12:05,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2025-02-05 20:12:05,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 753. [2025-02-05 20:12:05,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 1.3816489361702127) internal successors, (1039), 752 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states 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 20:12:05,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1039 transitions. [2025-02-05 20:12:05,310 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1039 transitions. Word has length 77 [2025-02-05 20:12:05,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:05,310 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 1039 transitions. [2025-02-05 20:12:05,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.1875) internal successors, (166), 32 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:12:05,311 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1039 transitions. [2025-02-05 20:12:05,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-02-05 20:12:05,311 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:05,311 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:05,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 20:12:05,512 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,SelfDestructingSolverStorable16 [2025-02-05 20:12:05,512 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:05,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:05,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1704538507, now seen corresponding path program 1 times [2025-02-05 20:12:05,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:05,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940006131] [2025-02-05 20:12:05,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:05,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:05,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-02-05 20:12:05,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-02-05 20:12:05,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:05,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:05,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:05,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940006131] [2025-02-05 20:12:05,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940006131] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:05,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:05,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 20:12:05,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417246621] [2025-02-05 20:12:05,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:05,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 20:12:05,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:05,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 20:12:05,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 20:12:05,651 INFO L87 Difference]: Start difference. First operand 753 states and 1039 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 20:12:05,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:05,775 INFO L93 Difference]: Finished difference Result 1293 states and 1789 transitions. [2025-02-05 20:12:05,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 20:12:05,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 77 [2025-02-05 20:12:05,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:05,778 INFO L225 Difference]: With dead ends: 1293 [2025-02-05 20:12:05,778 INFO L226 Difference]: Without dead ends: 761 [2025-02-05 20:12:05,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 20:12:05,778 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 53 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:05,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 696 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:12:05,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2025-02-05 20:12:05,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2025-02-05 20:12:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 760 states have (on average 1.3671052631578948) internal successors, (1039), 760 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states 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 20:12:05,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1039 transitions. [2025-02-05 20:12:05,789 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1039 transitions. Word has length 77 [2025-02-05 20:12:05,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:05,789 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 1039 transitions. [2025-02-05 20:12:05,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 20:12:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1039 transitions. [2025-02-05 20:12:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-02-05 20:12:05,790 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:05,790 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:05,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-05 20:12:05,790 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:05,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:05,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2092270248, now seen corresponding path program 1 times [2025-02-05 20:12:05,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:05,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143172981] [2025-02-05 20:12:05,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:05,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:05,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-02-05 20:12:05,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-02-05 20:12:05,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:05,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:06,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:06,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:06,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143172981] [2025-02-05 20:12:06,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143172981] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:06,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:06,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-05 20:12:06,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670436931] [2025-02-05 20:12:06,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:06,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 20:12:06,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:06,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 20:12:06,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-02-05 20:12:06,001 INFO L87 Difference]: Start difference. First operand 761 states and 1039 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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 20:12:06,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:06,142 INFO L93 Difference]: Finished difference Result 1373 states and 1885 transitions. [2025-02-05 20:12:06,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 20:12:06,142 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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 77 [2025-02-05 20:12:06,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:06,144 INFO L225 Difference]: With dead ends: 1373 [2025-02-05 20:12:06,144 INFO L226 Difference]: Without dead ends: 801 [2025-02-05 20:12:06,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-05 20:12:06,145 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 55 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:06,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 821 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:12:06,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2025-02-05 20:12:06,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 801. [2025-02-05 20:12:06,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 800 states have (on average 1.35875) internal successors, (1087), 800 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states 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 20:12:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1087 transitions. [2025-02-05 20:12:06,157 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1087 transitions. Word has length 77 [2025-02-05 20:12:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:06,157 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 1087 transitions. [2025-02-05 20:12:06,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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 20:12:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1087 transitions. [2025-02-05 20:12:06,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-02-05 20:12:06,158 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:06,158 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:06,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-05 20:12:06,158 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:06,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:06,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1976263581, now seen corresponding path program 1 times [2025-02-05 20:12:06,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:06,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950210532] [2025-02-05 20:12:06,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:06,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:06,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-02-05 20:12:06,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-02-05 20:12:06,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:06,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:06,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:06,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950210532] [2025-02-05 20:12:06,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950210532] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:06,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:06,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 20:12:06,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656786382] [2025-02-05 20:12:06,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:06,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 20:12:06,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:06,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 20:12:06,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 20:12:06,268 INFO L87 Difference]: Start difference. First operand 801 states and 1087 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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 20:12:06,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:06,331 INFO L93 Difference]: Finished difference Result 1421 states and 1933 transitions. [2025-02-05 20:12:06,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 20:12:06,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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 77 [2025-02-05 20:12:06,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:06,333 INFO L225 Difference]: With dead ends: 1421 [2025-02-05 20:12:06,333 INFO L226 Difference]: Without dead ends: 749 [2025-02-05 20:12:06,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 20:12:06,335 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 56 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:06,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 475 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:12:06,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2025-02-05 20:12:06,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 749. [2025-02-05 20:12:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 748 states have (on average 1.3462566844919786) internal successors, (1007), 748 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states 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 20:12:06,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1007 transitions. [2025-02-05 20:12:06,345 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1007 transitions. Word has length 77 [2025-02-05 20:12:06,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:06,346 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1007 transitions. [2025-02-05 20:12:06,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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 20:12:06,346 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1007 transitions. [2025-02-05 20:12:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-05 20:12:06,346 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:06,347 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:06,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-05 20:12:06,347 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:06,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:06,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1414387178, now seen corresponding path program 1 times [2025-02-05 20:12:06,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:06,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479312183] [2025-02-05 20:12:06,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:06,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:06,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-05 20:12:06,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-05 20:12:06,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:06,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:06,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:06,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479312183] [2025-02-05 20:12:06,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479312183] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:06,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:06,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 20:12:06,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113617744] [2025-02-05 20:12:06,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:06,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 20:12:06,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:06,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 20:12:06,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 20:12:06,523 INFO L87 Difference]: Start difference. First operand 749 states and 1007 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 20:12:06,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:06,625 INFO L93 Difference]: Finished difference Result 1239 states and 1692 transitions. [2025-02-05 20:12:06,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 20:12:06,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 78 [2025-02-05 20:12:06,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:06,628 INFO L225 Difference]: With dead ends: 1239 [2025-02-05 20:12:06,628 INFO L226 Difference]: Without dead ends: 753 [2025-02-05 20:12:06,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 20:12:06,629 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 45 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:06,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 678 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:12:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2025-02-05 20:12:06,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 749. [2025-02-05 20:12:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 748 states have (on average 1.3409090909090908) internal successors, (1003), 748 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states 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 20:12:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1003 transitions. [2025-02-05 20:12:06,640 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1003 transitions. Word has length 78 [2025-02-05 20:12:06,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:06,640 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1003 transitions. [2025-02-05 20:12:06,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 20:12:06,640 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1003 transitions. [2025-02-05 20:12:06,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-05 20:12:06,641 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:06,641 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:06,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-05 20:12:06,641 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:06,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:06,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1495913878, now seen corresponding path program 1 times [2025-02-05 20:12:06,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:06,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123435994] [2025-02-05 20:12:06,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:06,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:06,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-05 20:12:06,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-05 20:12:06,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:06,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:06,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:06,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123435994] [2025-02-05 20:12:06,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123435994] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:06,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:06,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-05 20:12:06,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431559223] [2025-02-05 20:12:06,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:06,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 20:12:06,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:06,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 20:12:06,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-05 20:12:06,976 INFO L87 Difference]: Start difference. First operand 749 states and 1003 transitions. Second operand has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 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 20:12:07,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:07,115 INFO L93 Difference]: Finished difference Result 1254 states and 1704 transitions. [2025-02-05 20:12:07,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 20:12:07,118 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 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 78 [2025-02-05 20:12:07,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:07,119 INFO L225 Difference]: With dead ends: 1254 [2025-02-05 20:12:07,119 INFO L226 Difference]: Without dead ends: 757 [2025-02-05 20:12:07,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-02-05 20:12:07,123 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 52 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:07,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 835 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:12:07,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2025-02-05 20:12:07,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 753. [2025-02-05 20:12:07,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 1.3337765957446808) internal successors, (1003), 752 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states 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 20:12:07,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1003 transitions. [2025-02-05 20:12:07,133 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1003 transitions. Word has length 78 [2025-02-05 20:12:07,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:07,133 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 1003 transitions. [2025-02-05 20:12:07,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.090909090909091) internal successors, (78), 11 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 20:12:07,133 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1003 transitions. [2025-02-05 20:12:07,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-05 20:12:07,134 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:07,134 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:07,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-05 20:12:07,135 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:07,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:07,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1204192935, now seen corresponding path program 1 times [2025-02-05 20:12:07,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:07,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098543581] [2025-02-05 20:12:07,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:07,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:07,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-05 20:12:07,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-05 20:12:07,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:07,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:07,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:07,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098543581] [2025-02-05 20:12:07,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098543581] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:07,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:07,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 20:12:07,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911867985] [2025-02-05 20:12:07,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:07,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 20:12:07,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:07,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 20:12:07,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 20:12:07,301 INFO L87 Difference]: Start difference. First operand 753 states and 1003 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 20:12:07,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:07,395 INFO L93 Difference]: Finished difference Result 1532 states and 2051 transitions. [2025-02-05 20:12:07,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 20:12:07,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 78 [2025-02-05 20:12:07,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:07,398 INFO L225 Difference]: With dead ends: 1532 [2025-02-05 20:12:07,398 INFO L226 Difference]: Without dead ends: 818 [2025-02-05 20:12:07,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 20:12:07,399 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 9 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:07,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 730 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:12:07,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2025-02-05 20:12:07,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 813. [2025-02-05 20:12:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 812 states have (on average 1.3349753694581281) internal successors, (1084), 812 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states 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 20:12:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1084 transitions. [2025-02-05 20:12:07,411 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1084 transitions. Word has length 78 [2025-02-05 20:12:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:07,411 INFO L471 AbstractCegarLoop]: Abstraction has 813 states and 1084 transitions. [2025-02-05 20:12:07,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 20:12:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1084 transitions. [2025-02-05 20:12:07,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 20:12:07,412 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:07,412 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:07,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-05 20:12:07,412 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:07,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:07,413 INFO L85 PathProgramCache]: Analyzing trace with hash 191245244, now seen corresponding path program 1 times [2025-02-05 20:12:07,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:07,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167730814] [2025-02-05 20:12:07,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:07,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:07,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 20:12:07,437 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 20:12:07,437 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:07,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:07,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:07,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167730814] [2025-02-05 20:12:07,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167730814] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:07,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:07,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 20:12:07,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901408527] [2025-02-05 20:12:07,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:07,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 20:12:07,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:07,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 20:12:07,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 20:12:07,508 INFO L87 Difference]: Start difference. First operand 813 states and 1084 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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 20:12:07,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:07,575 INFO L93 Difference]: Finished difference Result 1578 states and 2107 transitions. [2025-02-05 20:12:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 20:12:07,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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 79 [2025-02-05 20:12:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:07,577 INFO L225 Difference]: With dead ends: 1578 [2025-02-05 20:12:07,577 INFO L226 Difference]: Without dead ends: 808 [2025-02-05 20:12:07,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-05 20:12:07,578 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 76 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:07,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 470 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:12:07,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2025-02-05 20:12:07,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2025-02-05 20:12:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 1.332094175960347) internal successors, (1075), 807 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states 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 20:12:07,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1075 transitions. [2025-02-05 20:12:07,588 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1075 transitions. Word has length 79 [2025-02-05 20:12:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:07,588 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1075 transitions. [2025-02-05 20:12:07,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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 20:12:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1075 transitions. [2025-02-05 20:12:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 20:12:07,589 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:07,589 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:07,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-05 20:12:07,589 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:07,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:07,589 INFO L85 PathProgramCache]: Analyzing trace with hash -6493018, now seen corresponding path program 1 times [2025-02-05 20:12:07,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:07,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560748046] [2025-02-05 20:12:07,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:07,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:07,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 20:12:07,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 20:12:07,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:07,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:08,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:08,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560748046] [2025-02-05 20:12:08,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560748046] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:08,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:08,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-05 20:12:08,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360839134] [2025-02-05 20:12:08,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:08,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 20:12:08,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:08,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 20:12:08,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-02-05 20:12:08,033 INFO L87 Difference]: Start difference. First operand 808 states and 1075 transitions. Second operand has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 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 20:12:08,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:08,238 INFO L93 Difference]: Finished difference Result 1307 states and 1776 transitions. [2025-02-05 20:12:08,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 20:12:08,238 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 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 79 [2025-02-05 20:12:08,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:08,240 INFO L225 Difference]: With dead ends: 1307 [2025-02-05 20:12:08,240 INFO L226 Difference]: Without dead ends: 751 [2025-02-05 20:12:08,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-02-05 20:12:08,241 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 86 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:08,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 922 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:12:08,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2025-02-05 20:12:08,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2025-02-05 20:12:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 1.3346666666666667) internal successors, (1001), 750 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states 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 20:12:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1001 transitions. [2025-02-05 20:12:08,251 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1001 transitions. Word has length 79 [2025-02-05 20:12:08,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:08,251 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 1001 transitions. [2025-02-05 20:12:08,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.181818181818182) internal successors, (79), 11 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 20:12:08,251 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1001 transitions. [2025-02-05 20:12:08,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 20:12:08,252 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:08,252 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:08,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-05 20:12:08,252 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:08,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:08,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1715817923, now seen corresponding path program 1 times [2025-02-05 20:12:08,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:08,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139717150] [2025-02-05 20:12:08,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:08,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:08,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 20:12:08,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 20:12:08,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:08,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:08,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:08,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139717150] [2025-02-05 20:12:08,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139717150] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:08,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:08,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-05 20:12:08,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767537184] [2025-02-05 20:12:08,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:08,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 20:12:08,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:08,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 20:12:08,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-05 20:12:08,463 INFO L87 Difference]: Start difference. First operand 751 states and 1001 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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 20:12:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:08,617 INFO L93 Difference]: Finished difference Result 1004 states and 1364 transitions. [2025-02-05 20:12:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 20:12:08,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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 79 [2025-02-05 20:12:08,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:08,618 INFO L225 Difference]: With dead ends: 1004 [2025-02-05 20:12:08,618 INFO L226 Difference]: Without dead ends: 711 [2025-02-05 20:12:08,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-02-05 20:12:08,619 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 40 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:08,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 903 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:12:08,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2025-02-05 20:12:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 698. [2025-02-05 20:12:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 1.338593974175036) internal successors, (933), 697 states have internal predecessors, (933), 0 states have call successors, (0), 0 states 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 20:12:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 933 transitions. [2025-02-05 20:12:08,629 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 933 transitions. Word has length 79 [2025-02-05 20:12:08,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:08,630 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 933 transitions. [2025-02-05 20:12:08,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 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 20:12:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 933 transitions. [2025-02-05 20:12:08,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 20:12:08,631 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:08,631 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:08,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-05 20:12:08,631 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:08,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:08,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1963786874, now seen corresponding path program 1 times [2025-02-05 20:12:08,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:08,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973354755] [2025-02-05 20:12:08,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:08,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:08,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-05 20:12:08,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 20:12:08,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:08,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:09,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:09,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973354755] [2025-02-05 20:12:09,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973354755] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:09,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:09,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-05 20:12:09,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937639675] [2025-02-05 20:12:09,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:09,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 20:12:09,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:09,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 20:12:09,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2025-02-05 20:12:09,004 INFO L87 Difference]: Start difference. First operand 698 states and 933 transitions. Second operand has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 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 20:12:09,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:09,411 INFO L93 Difference]: Finished difference Result 1341 states and 1801 transitions. [2025-02-05 20:12:09,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-05 20:12:09,412 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 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 79 [2025-02-05 20:12:09,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:09,413 INFO L225 Difference]: With dead ends: 1341 [2025-02-05 20:12:09,413 INFO L226 Difference]: Without dead ends: 749 [2025-02-05 20:12:09,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2025-02-05 20:12:09,415 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 123 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:09,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1411 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 20:12:09,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2025-02-05 20:12:09,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 738. [2025-02-05 20:12:09,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 737 states have (on average 1.3310719131614654) internal successors, (981), 737 states have internal predecessors, (981), 0 states have call successors, (0), 0 states 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 20:12:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 981 transitions. [2025-02-05 20:12:09,426 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 981 transitions. Word has length 79 [2025-02-05 20:12:09,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:09,426 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 981 transitions. [2025-02-05 20:12:09,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 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 20:12:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 981 transitions. [2025-02-05 20:12:09,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-02-05 20:12:09,427 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:09,427 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:09,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-02-05 20:12:09,427 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:09,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:09,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1544291423, now seen corresponding path program 1 times [2025-02-05 20:12:09,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:09,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663743827] [2025-02-05 20:12:09,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:09,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:09,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-02-05 20:12:09,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-02-05 20:12:09,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:09,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:10,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:10,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663743827] [2025-02-05 20:12:10,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663743827] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 20:12:10,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031740822] [2025-02-05 20:12:10,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:10,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:12:10,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 20:12:10,052 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 20:12:10,053 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 20:12:10,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-02-05 20:12:10,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-02-05 20:12:10,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:10,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:10,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-05 20:12:10,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 20:12:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:10,477 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 20:12:10,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031740822] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:10,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 20:12:10,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [21] total 27 [2025-02-05 20:12:10,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187102391] [2025-02-05 20:12:10,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:10,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 20:12:10,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:10,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 20:12:10,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2025-02-05 20:12:10,478 INFO L87 Difference]: Start difference. First operand 738 states and 981 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 20:12:10,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:10,596 INFO L93 Difference]: Finished difference Result 1329 states and 1804 transitions. [2025-02-05 20:12:10,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 20:12:10,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2025-02-05 20:12:10,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:10,598 INFO L225 Difference]: With dead ends: 1329 [2025-02-05 20:12:10,598 INFO L226 Difference]: Without dead ends: 818 [2025-02-05 20:12:10,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2025-02-05 20:12:10,600 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 12 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:10,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 831 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:12:10,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2025-02-05 20:12:10,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 794. [2025-02-05 20:12:10,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.335435056746532) internal successors, (1059), 793 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states 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 20:12:10,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1059 transitions. [2025-02-05 20:12:10,610 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1059 transitions. Word has length 80 [2025-02-05 20:12:10,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:10,610 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 1059 transitions. [2025-02-05 20:12:10,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 20:12:10,611 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1059 transitions. [2025-02-05 20:12:10,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-02-05 20:12:10,611 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:10,612 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:10,622 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 20:12:10,813 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,SelfDestructingSolverStorable27 [2025-02-05 20:12:10,813 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:10,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:10,813 INFO L85 PathProgramCache]: Analyzing trace with hash -296811591, now seen corresponding path program 1 times [2025-02-05 20:12:10,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:10,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065176860] [2025-02-05 20:12:10,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:10,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:10,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-02-05 20:12:10,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-02-05 20:12:10,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:10,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:11,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:11,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065176860] [2025-02-05 20:12:11,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065176860] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:11,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:11,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-02-05 20:12:11,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421807837] [2025-02-05 20:12:11,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:11,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 20:12:11,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:11,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 20:12:11,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2025-02-05 20:12:11,448 INFO L87 Difference]: Start difference. First operand 794 states and 1059 transitions. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 20:12:12,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-05 20:12:13,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:13,311 INFO L93 Difference]: Finished difference Result 1158 states and 1555 transitions. [2025-02-05 20:12:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-05 20:12:13,311 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2025-02-05 20:12:13,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:13,313 INFO L225 Difference]: With dead ends: 1158 [2025-02-05 20:12:13,313 INFO L226 Difference]: Without dead ends: 829 [2025-02-05 20:12:13,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2025-02-05 20:12:13,314 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 113 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:13,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1284 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-05 20:12:13,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2025-02-05 20:12:13,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 822. [2025-02-05 20:12:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 821 states have (on average 1.3288672350791717) internal successors, (1091), 821 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states 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 20:12:13,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1091 transitions. [2025-02-05 20:12:13,326 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1091 transitions. Word has length 80 [2025-02-05 20:12:13,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:13,327 INFO L471 AbstractCegarLoop]: Abstraction has 822 states and 1091 transitions. [2025-02-05 20:12:13,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 20:12:13,327 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1091 transitions. [2025-02-05 20:12:13,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-02-05 20:12:13,327 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:13,327 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:13,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-02-05 20:12:13,328 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:13,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:13,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1412417250, now seen corresponding path program 1 times [2025-02-05 20:12:13,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:13,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282910376] [2025-02-05 20:12:13,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:13,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:13,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-02-05 20:12:13,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-02-05 20:12:13,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:13,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:13,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:13,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282910376] [2025-02-05 20:12:13,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282910376] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:13,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:13,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-05 20:12:13,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927620670] [2025-02-05 20:12:13,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:13,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 20:12:13,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:13,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 20:12:13,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-05 20:12:13,553 INFO L87 Difference]: Start difference. First operand 822 states and 1091 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 20:12:13,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:13,684 INFO L93 Difference]: Finished difference Result 1414 states and 1911 transitions. [2025-02-05 20:12:13,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 20:12:13,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2025-02-05 20:12:13,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:13,686 INFO L225 Difference]: With dead ends: 1414 [2025-02-05 20:12:13,686 INFO L226 Difference]: Without dead ends: 634 [2025-02-05 20:12:13,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-05 20:12:13,688 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 57 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:13,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 695 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 20:12:13,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2025-02-05 20:12:13,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 634. [2025-02-05 20:12:13,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 1.3744075829383886) internal successors, (870), 633 states have internal predecessors, (870), 0 states have call successors, (0), 0 states 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 20:12:13,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 870 transitions. [2025-02-05 20:12:13,696 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 870 transitions. Word has length 80 [2025-02-05 20:12:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:13,696 INFO L471 AbstractCegarLoop]: Abstraction has 634 states and 870 transitions. [2025-02-05 20:12:13,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 20:12:13,697 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 870 transitions. [2025-02-05 20:12:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-02-05 20:12:13,697 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:13,697 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:13,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-02-05 20:12:13,698 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:13,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:13,698 INFO L85 PathProgramCache]: Analyzing trace with hash 356717482, now seen corresponding path program 1 times [2025-02-05 20:12:13,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:13,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467453354] [2025-02-05 20:12:13,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:13,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:13,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-02-05 20:12:13,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-02-05 20:12:13,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:13,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:14,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:14,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467453354] [2025-02-05 20:12:14,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467453354] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 20:12:14,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655536810] [2025-02-05 20:12:14,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:14,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:12:14,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 20:12:14,244 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 20:12:14,245 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 20:12:14,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-02-05 20:12:14,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-02-05 20:12:14,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:14,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:14,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-02-05 20:12:14,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 20:12:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:15,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 20:12:16,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:16,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655536810] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 20:12:16,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 20:12:16,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 23] total 61 [2025-02-05 20:12:16,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113169435] [2025-02-05 20:12:16,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 20:12:16,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2025-02-05 20:12:16,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:16,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2025-02-05 20:12:16,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=3445, Unknown=0, NotChecked=0, Total=3660 [2025-02-05 20:12:16,489 INFO L87 Difference]: Start difference. First operand 634 states and 870 transitions. Second operand has 61 states, 61 states have (on average 3.7868852459016393) internal successors, (231), 61 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 20:12:18,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:18,207 INFO L93 Difference]: Finished difference Result 945 states and 1308 transitions. [2025-02-05 20:12:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-05 20:12:18,208 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.7868852459016393) internal successors, (231), 61 states have internal predecessors, (231), 0 states have call successors, (0), 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 81 [2025-02-05 20:12:18,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:18,209 INFO L225 Difference]: With dead ends: 945 [2025-02-05 20:12:18,209 INFO L226 Difference]: Without dead ends: 654 [2025-02-05 20:12:18,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1338 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=369, Invalid=5331, Unknown=0, NotChecked=0, Total=5700 [2025-02-05 20:12:18,211 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 111 mSDsluCounter, 3619 mSDsCounter, 0 mSdLazyCounter, 3403 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 3410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:18,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 3709 Invalid, 3410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3403 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-05 20:12:18,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2025-02-05 20:12:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 651. [2025-02-05 20:12:18,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 650 states have (on average 1.366153846153846) internal successors, (888), 650 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 20:12:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 888 transitions. [2025-02-05 20:12:18,220 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 888 transitions. Word has length 81 [2025-02-05 20:12:18,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:18,221 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 888 transitions. [2025-02-05 20:12:18,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.7868852459016393) internal successors, (231), 61 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 20:12:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 888 transitions. [2025-02-05 20:12:18,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-02-05 20:12:18,221 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:18,222 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:18,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 20:12:18,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:12:18,426 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:18,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1407665202, now seen corresponding path program 1 times [2025-02-05 20:12:18,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:18,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956833144] [2025-02-05 20:12:18,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:18,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:18,444 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-02-05 20:12:18,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-02-05 20:12:18,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:18,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:19,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:19,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956833144] [2025-02-05 20:12:19,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956833144] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 20:12:19,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407378267] [2025-02-05 20:12:19,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:19,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:12:19,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 20:12:19,139 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 20:12:19,140 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 20:12:19,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-02-05 20:12:19,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-02-05 20:12:19,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:19,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:19,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 118 conjuncts are in the unsatisfiable core [2025-02-05 20:12:19,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 20:12:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:21,362 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 20:12:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:25,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407378267] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 20:12:25,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 20:12:25,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 30, 31] total 77 [2025-02-05 20:12:25,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405005956] [2025-02-05 20:12:25,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 20:12:25,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2025-02-05 20:12:25,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:25,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2025-02-05 20:12:25,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=5390, Unknown=0, NotChecked=0, Total=5852 [2025-02-05 20:12:25,545 INFO L87 Difference]: Start difference. First operand 651 states and 888 transitions. Second operand has 77 states, 77 states have (on average 2.9740259740259742) internal successors, (229), 77 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:12:32,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:32,845 INFO L93 Difference]: Finished difference Result 1360 states and 1880 transitions. [2025-02-05 20:12:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-05 20:12:32,846 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.9740259740259742) internal successors, (229), 77 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2025-02-05 20:12:32,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:32,848 INFO L225 Difference]: With dead ends: 1360 [2025-02-05 20:12:32,848 INFO L226 Difference]: Without dead ends: 1048 [2025-02-05 20:12:32,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5432 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1648, Invalid=20108, Unknown=0, NotChecked=0, Total=21756 [2025-02-05 20:12:32,856 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 818 mSDsluCounter, 4069 mSDsCounter, 0 mSdLazyCounter, 3958 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 4187 SdHoareTripleChecker+Invalid, 3989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:32,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 4187 Invalid, 3989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 3958 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-02-05 20:12:32,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2025-02-05 20:12:32,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 913. [2025-02-05 20:12:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 912 states have (on average 1.3837719298245614) internal successors, (1262), 912 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states 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 20:12:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1262 transitions. [2025-02-05 20:12:32,884 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1262 transitions. Word has length 81 [2025-02-05 20:12:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:32,884 INFO L471 AbstractCegarLoop]: Abstraction has 913 states and 1262 transitions. [2025-02-05 20:12:32,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.9740259740259742) internal successors, (229), 77 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:12:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1262 transitions. [2025-02-05 20:12:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-02-05 20:12:32,885 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:32,885 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:32,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 20:12:33,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:12:33,086 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:33,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:33,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1671866877, now seen corresponding path program 1 times [2025-02-05 20:12:33,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:33,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855514412] [2025-02-05 20:12:33,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:33,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:33,110 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-02-05 20:12:33,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-02-05 20:12:33,189 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:33,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:34,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:34,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855514412] [2025-02-05 20:12:34,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855514412] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 20:12:34,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645232739] [2025-02-05 20:12:34,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:34,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:12:34,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 20:12:34,313 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 20:12:34,314 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 20:12:34,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-02-05 20:12:34,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-02-05 20:12:34,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:34,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:34,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 107 conjuncts are in the unsatisfiable core [2025-02-05 20:12:34,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 20:12:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:35,787 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 20:12:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:37,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645232739] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 20:12:37,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 20:12:37,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 28] total 69 [2025-02-05 20:12:37,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784251175] [2025-02-05 20:12:37,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 20:12:37,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2025-02-05 20:12:37,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:37,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2025-02-05 20:12:37,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=4278, Unknown=0, NotChecked=0, Total=4692 [2025-02-05 20:12:37,794 INFO L87 Difference]: Start difference. First operand 913 states and 1262 transitions. Second operand has 69 states, 69 states have (on average 3.36231884057971) internal successors, (232), 69 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 20:12:40,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:40,047 INFO L93 Difference]: Finished difference Result 1595 states and 2233 transitions. [2025-02-05 20:12:40,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-02-05 20:12:40,047 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.36231884057971) internal successors, (232), 69 states have internal predecessors, (232), 0 states have call successors, (0), 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 82 [2025-02-05 20:12:40,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:40,050 INFO L225 Difference]: With dead ends: 1595 [2025-02-05 20:12:40,050 INFO L226 Difference]: Without dead ends: 1140 [2025-02-05 20:12:40,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2637 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=772, Invalid=8540, Unknown=0, NotChecked=0, Total=9312 [2025-02-05 20:12:40,052 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 306 mSDsluCounter, 3412 mSDsCounter, 0 mSdLazyCounter, 3153 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 3521 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:40,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 3521 Invalid, 3161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3153 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-05 20:12:40,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2025-02-05 20:12:40,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1054. [2025-02-05 20:12:40,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 1053 states have (on average 1.3969610636277303) internal successors, (1471), 1053 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states 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 20:12:40,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1471 transitions. [2025-02-05 20:12:40,097 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1471 transitions. Word has length 82 [2025-02-05 20:12:40,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:40,097 INFO L471 AbstractCegarLoop]: Abstraction has 1054 states and 1471 transitions. [2025-02-05 20:12:40,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.36231884057971) internal successors, (232), 69 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 20:12:40,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1471 transitions. [2025-02-05 20:12:40,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-05 20:12:40,101 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:40,101 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:40,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-05 20:12:40,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:12:40,302 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:40,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:40,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1476389403, now seen corresponding path program 1 times [2025-02-05 20:12:40,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:40,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268751520] [2025-02-05 20:12:40,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:40,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:40,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-05 20:12:40,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-05 20:12:40,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:40,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:40,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:40,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268751520] [2025-02-05 20:12:40,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268751520] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 20:12:40,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829042726] [2025-02-05 20:12:40,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:40,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:12:40,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 20:12:40,608 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 20:12:40,613 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 20:12:40,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-05 20:12:40,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-05 20:12:40,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:40,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:40,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 84 conjuncts are in the unsatisfiable core [2025-02-05 20:12:40,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 20:12:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:41,407 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 20:12:41,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829042726] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:41,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 20:12:41,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2025-02-05 20:12:41,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100649231] [2025-02-05 20:12:41,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:41,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-05 20:12:41,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:41,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-05 20:12:41,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2025-02-05 20:12:41,409 INFO L87 Difference]: Start difference. First operand 1054 states and 1471 transitions. Second operand has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 20:12:41,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:41,930 INFO L93 Difference]: Finished difference Result 2048 states and 2917 transitions. [2025-02-05 20:12:41,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 20:12:41,930 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2025-02-05 20:12:41,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:41,934 INFO L225 Difference]: With dead ends: 2048 [2025-02-05 20:12:41,934 INFO L226 Difference]: Without dead ends: 1500 [2025-02-05 20:12:41,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2025-02-05 20:12:41,935 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 34 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 1580 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:41,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2361 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1580 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 20:12:41,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2025-02-05 20:12:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1424. [2025-02-05 20:12:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 1.4237526352775827) internal successors, (2026), 1423 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states 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 20:12:41,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2026 transitions. [2025-02-05 20:12:41,950 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2026 transitions. Word has length 83 [2025-02-05 20:12:41,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:41,951 INFO L471 AbstractCegarLoop]: Abstraction has 1424 states and 2026 transitions. [2025-02-05 20:12:41,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.4583333333333335) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 20:12:41,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2026 transitions. [2025-02-05 20:12:41,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-05 20:12:41,952 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:41,952 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:41,960 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 20:12:42,156 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,SelfDestructingSolverStorable33 [2025-02-05 20:12:42,156 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:42,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:42,157 INFO L85 PathProgramCache]: Analyzing trace with hash 587318714, now seen corresponding path program 1 times [2025-02-05 20:12:42,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:42,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983373572] [2025-02-05 20:12:42,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:42,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:42,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-05 20:12:42,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-05 20:12:42,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:42,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:43,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 20:12:43,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983373572] [2025-02-05 20:12:43,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983373572] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:43,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:43,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2025-02-05 20:12:43,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073257560] [2025-02-05 20:12:43,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:43,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-05 20:12:43,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 20:12:43,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-05 20:12:43,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2025-02-05 20:12:43,180 INFO L87 Difference]: Start difference. First operand 1424 states and 2026 transitions. Second operand has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 20:12:43,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:43,833 INFO L93 Difference]: Finished difference Result 3029 states and 4351 transitions. [2025-02-05 20:12:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-05 20:12:43,833 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2025-02-05 20:12:43,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:43,836 INFO L225 Difference]: With dead ends: 3029 [2025-02-05 20:12:43,836 INFO L226 Difference]: Without dead ends: 1773 [2025-02-05 20:12:43,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2025-02-05 20:12:43,838 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 54 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:43,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2420 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 20:12:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2025-02-05 20:12:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1567. [2025-02-05 20:12:43,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1566 states have (on average 1.4246487867177522) internal successors, (2231), 1566 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states 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 20:12:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2231 transitions. [2025-02-05 20:12:43,864 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2231 transitions. Word has length 83 [2025-02-05 20:12:43,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:43,864 INFO L471 AbstractCegarLoop]: Abstraction has 1567 states and 2231 transitions. [2025-02-05 20:12:43,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 20:12:43,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2231 transitions. [2025-02-05 20:12:43,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-05 20:12:43,865 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:43,865 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:43,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-02-05 20:12:43,865 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:43,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:43,869 INFO L85 PathProgramCache]: Analyzing trace with hash -174320918, now seen corresponding path program 1 times [2025-02-05 20:12:43,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 20:12:43,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346170576] [2025-02-05 20:12:43,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:43,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 20:12:43,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-05 20:12:44,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-05 20:12:44,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:44,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-05 20:12:44,032 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-05 20:12:44,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-05 20:12:44,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-05 20:12:44,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:44,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-05 20:12:44,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-05 20:12:44,183 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-05 20:12:44,184 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-05 20:12:44,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-02-05 20:12:44,200 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:44,284 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-02-05 20:12:44,291 WARN L310 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2025-02-05 20:12:44,315 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-05 20:12:44,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 08:12:44 BoogieIcfgContainer [2025-02-05 20:12:44,326 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-05 20:12:44,327 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-05 20:12:44,327 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-05 20:12:44,327 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-05 20:12:44,334 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 08:11:49" (3/4) ... [2025-02-05 20:12:44,336 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-05 20:12:44,340 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-05 20:12:44,344 INFO L158 Benchmark]: Toolchain (without parser) took 56126.90ms. Allocated memory was 142.6MB in the beginning and 167.8MB in the end (delta: 25.2MB). Free memory was 113.0MB in the beginning and 62.0MB in the end (delta: 51.0MB). Peak memory consumption was 75.0MB. Max. memory is 16.1GB. [2025-02-05 20:12:44,344 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 20:12:44,344 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.41ms. Allocated memory is still 142.6MB. Free memory was 113.0MB in the beginning and 98.0MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-05 20:12:44,344 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.98ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 89.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 20:12:44,345 INFO L158 Benchmark]: Boogie Preprocessor took 40.47ms. Allocated memory is still 142.6MB. Free memory was 88.7MB in the beginning and 84.4MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 20:12:44,345 INFO L158 Benchmark]: IcfgBuilder took 859.75ms. Allocated memory is still 142.6MB. Free memory was 84.4MB in the beginning and 96.2MB in the end (delta: -11.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2025-02-05 20:12:44,345 INFO L158 Benchmark]: TraceAbstraction took 54938.66ms. Allocated memory was 142.6MB in the beginning and 167.8MB in the end (delta: 25.2MB). Free memory was 95.5MB in the beginning and 62.0MB in the end (delta: 33.5MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2025-02-05 20:12:44,348 INFO L158 Benchmark]: Witness Printer took 16.73ms. Allocated memory is still 167.8MB. Free memory was 62.0MB in the beginning and 62.0MB in the end (delta: 21.5kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 20:12:44,349 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 124.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.41ms. Allocated memory is still 142.6MB. Free memory was 113.0MB in the beginning and 98.0MB in the end (delta: 15.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.98ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 89.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.47ms. Allocated memory is still 142.6MB. Free memory was 88.7MB in the beginning and 84.4MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 859.75ms. Allocated memory is still 142.6MB. Free memory was 84.4MB in the beginning and 96.2MB in the end (delta: -11.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 54938.66ms. Allocated memory was 142.6MB in the beginning and 167.8MB in the end (delta: 25.2MB). Free memory was 95.5MB in the beginning and 62.0MB in the end (delta: 33.5MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. * Witness Printer took 16.73ms. Allocated memory is still 167.8MB. Free memory was 62.0MB in the beginning and 62.0MB in the end (delta: 21.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 168, overapproximation of bitwiseOr at line 171, overapproximation of bitwiseAnd at line 182. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 3); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (3 - 1); [L29] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 1); [L30] const SORT_3 msb_SORT_3 = (SORT_3)1 << (1 - 1); [L32] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 8); [L33] const SORT_12 msb_SORT_12 = (SORT_12)1 << (8 - 1); [L35] const SORT_3 var_14 = 0; [L36] const SORT_3 var_29 = 1; [L38] SORT_1 input_2; [L39] SORT_3 input_4; [L40] SORT_3 input_5; [L41] SORT_3 input_6; [L42] SORT_3 input_7; [L43] SORT_3 input_8; [L44] SORT_3 input_9; [L45] SORT_3 input_10; [L46] SORT_3 input_11; [L47] SORT_12 input_13; [L48] SORT_12 input_33; [L49] SORT_12 input_35; [L50] SORT_3 input_37; [L51] SORT_3 input_39; [L52] SORT_12 input_83; [L53] SORT_3 input_89; [L54] SORT_1 input_92; [L55] SORT_3 input_94; [L56] SORT_3 input_96; [L57] SORT_3 input_98; [L59] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 VAL [mask_SORT_3=1, var_14=0, var_29=1] [L59] SORT_3 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L60] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 VAL [mask_SORT_3=1, var_14=0, var_29=1] [L60] SORT_3 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L61] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 VAL [mask_SORT_3=1, var_14=0, var_29=1] [L61] SORT_3 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L62] EXPR __VERIFIER_nondet_uchar() & mask_SORT_3 VAL [mask_SORT_3=1, var_14=0, var_29=1] [L62] SORT_3 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L64] SORT_3 init_16_arg_1 = var_14; [L65] state_15 = init_16_arg_1 [L66] SORT_3 init_18_arg_1 = var_14; [L67] state_17 = init_18_arg_1 [L68] SORT_3 init_21_arg_1 = var_14; [L69] state_20 = init_21_arg_1 [L70] SORT_3 init_25_arg_1 = var_14; [L71] state_24 = init_25_arg_1 VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, state_24=0, var_29=1] [L74] input_2 = __VERIFIER_nondet_uchar() [L75] input_4 = __VERIFIER_nondet_uchar() [L76] input_5 = __VERIFIER_nondet_uchar() [L77] input_6 = __VERIFIER_nondet_uchar() [L78] input_7 = __VERIFIER_nondet_uchar() [L79] input_8 = __VERIFIER_nondet_uchar() [L80] input_9 = __VERIFIER_nondet_uchar() [L81] input_10 = __VERIFIER_nondet_uchar() [L82] input_11 = __VERIFIER_nondet_uchar() [L83] input_13 = __VERIFIER_nondet_uchar() [L84] input_33 = __VERIFIER_nondet_uchar() [L85] input_35 = __VERIFIER_nondet_uchar() [L86] input_37 = __VERIFIER_nondet_uchar() [L87] input_39 = __VERIFIER_nondet_uchar() [L88] input_83 = __VERIFIER_nondet_uchar() [L89] input_89 = __VERIFIER_nondet_uchar() [L90] input_92 = __VERIFIER_nondet_uchar() [L91] input_94 = __VERIFIER_nondet_uchar() [L92] input_96 = __VERIFIER_nondet_uchar() [L93] input_98 = __VERIFIER_nondet_uchar() [L96] SORT_3 var_19_arg_0 = state_15; [L97] SORT_3 var_19_arg_1 = state_17; VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, state_24=0, var_19_arg_0=0, var_19_arg_1=0, var_29=1] [L98] EXPR var_19_arg_0 | var_19_arg_1 VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, state_24=0, var_29=1] [L98] SORT_3 var_19 = var_19_arg_0 | var_19_arg_1; [L99] SORT_3 var_22_arg_0 = var_19; [L100] SORT_3 var_22_arg_1 = state_20; VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, state_24=0, var_22_arg_0=0, var_22_arg_1=0, var_29=1] [L101] EXPR var_22_arg_0 | var_22_arg_1 VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, state_24=0, var_29=1] [L101] SORT_3 var_22 = var_22_arg_0 | var_22_arg_1; [L102] SORT_3 var_23_arg_0 = var_22; [L103] SORT_3 var_23 = ~var_23_arg_0; [L104] SORT_3 var_26_arg_0 = var_23; [L105] SORT_3 var_26_arg_1 = state_24; VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_26_arg_0=-1, var_26_arg_1=0, var_29=1] [L106] EXPR var_26_arg_0 | var_26_arg_1 VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_29=1] [L106] SORT_3 var_26 = var_26_arg_0 | var_26_arg_1; [L107] SORT_3 var_30_arg_0 = var_26; [L108] SORT_3 var_30 = ~var_30_arg_0; [L109] SORT_3 var_31_arg_0 = var_29; [L110] SORT_3 var_31_arg_1 = var_30; VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_29=1, var_31_arg_0=1, var_31_arg_1=-256] [L111] EXPR var_31_arg_0 & var_31_arg_1 VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_29=1] [L111] SORT_3 var_31 = var_31_arg_0 & var_31_arg_1; [L112] EXPR var_31 & mask_SORT_3 VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_29=1] [L112] var_31 = var_31 & mask_SORT_3 [L113] SORT_3 bad_32_arg_0 = var_31; [L114] CALL __VERIFIER_assert(!(bad_32_arg_0)) [L21] COND FALSE !(!(cond)) [L114] RET __VERIFIER_assert(!(bad_32_arg_0)) [L116] SORT_3 var_41_arg_0 = state_17; [L117] SORT_3 var_41 = ~var_41_arg_0; [L118] SORT_3 var_42_arg_0 = state_15; [L119] SORT_3 var_42 = ~var_42_arg_0; [L120] SORT_3 var_43_arg_0 = var_42; [L121] SORT_3 var_43_arg_1 = state_20; VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_29=1, var_41=-1, var_42=-1, var_43_arg_0=-1, var_43_arg_1=0] [L122] EXPR var_43_arg_0 & var_43_arg_1 VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_29=1, var_41=-1, var_42=-1] [L122] SORT_3 var_43 = var_43_arg_0 & var_43_arg_1; [L123] SORT_3 var_44_arg_0 = var_43; [L124] SORT_3 var_44 = ~var_44_arg_0; [L125] SORT_3 var_45_arg_0 = var_41; [L126] SORT_3 var_45_arg_1 = var_44; VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_29=1, var_42=-1, var_45_arg_0=-1, var_45_arg_1=-1] [L127] EXPR var_45_arg_0 | var_45_arg_1 VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_29=1, var_42=-1] [L127] SORT_3 var_45 = var_45_arg_0 | var_45_arg_1; [L128] SORT_3 var_46_arg_0 = var_45; [L129] SORT_3 var_46 = ~var_46_arg_0; [L130] SORT_3 var_47_arg_0 = state_17; [L131] SORT_3 var_47_arg_1 = state_20; VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_29=1, var_42=-1, var_46=-256, var_47_arg_0=0, var_47_arg_1=0] [L132] EXPR var_47_arg_0 & var_47_arg_1 VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_29=1, var_42=-1, var_46=-256] [L132] SORT_3 var_47 = var_47_arg_0 & var_47_arg_1; [L133] SORT_3 var_48_arg_0 = var_42; [L134] SORT_3 var_48_arg_1 = var_47; VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_29=1, var_46=-256, var_48_arg_0=-1, var_48_arg_1=0] [L135] EXPR var_48_arg_0 | var_48_arg_1 VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_29=1, var_46=-256] [L135] SORT_3 var_48 = var_48_arg_0 | var_48_arg_1; [L136] SORT_3 var_49_arg_0 = var_48; [L137] SORT_3 var_49 = ~var_49_arg_0; [L138] SORT_3 var_50_arg_0 = var_46; [L139] SORT_3 var_50_arg_1 = var_49; VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_29=1, var_50_arg_0=-256, var_50_arg_1=-256] [L140] EXPR var_50_arg_0 | var_50_arg_1 VAL [mask_SORT_3=1, state_15=0, state_17=0, state_20=0, var_29=1] [L140] SORT_3 var_50 = var_50_arg_0 | var_50_arg_1; [L141] SORT_3 next_100_arg_1 = var_50; [L142] SORT_3 var_52_arg_0 = state_20; [L143] SORT_3 var_52 = ~var_52_arg_0; [L144] SORT_3 var_53_arg_0 = state_17; [L145] SORT_3 var_53_arg_1 = var_52; VAL [mask_SORT_3=1, next_100_arg_1=0, state_15=0, state_17=0, state_20=0, var_29=1, var_52=-1, var_53_arg_0=0, var_53_arg_1=-1] [L146] EXPR var_53_arg_0 | var_53_arg_1 VAL [mask_SORT_3=1, next_100_arg_1=0, state_15=0, state_17=0, state_20=0, var_29=1, var_52=-1] [L146] SORT_3 var_53 = var_53_arg_0 | var_53_arg_1; [L147] SORT_3 var_54_arg_0 = state_17; [L148] SORT_3 var_54_arg_1 = var_52; VAL [mask_SORT_3=1, next_100_arg_1=0, state_15=0, state_17=0, state_20=0, var_29=1, var_52=-1, var_53=255, var_54_arg_0=0, var_54_arg_1=-1] [L149] EXPR var_54_arg_0 & var_54_arg_1 VAL [mask_SORT_3=1, next_100_arg_1=0, state_15=0, state_17=0, state_20=0, var_29=1, var_52=-1, var_53=255] [L149] SORT_3 var_54 = var_54_arg_0 & var_54_arg_1; [L150] SORT_3 var_55_arg_0 = var_54; [L151] SORT_3 var_55 = ~var_55_arg_0; [L152] SORT_3 var_56_arg_0 = var_53; [L153] SORT_3 var_56_arg_1 = var_55; VAL [mask_SORT_3=1, next_100_arg_1=0, state_15=0, state_17=0, state_20=0, var_29=1, var_52=-1, var_56_arg_0=255, var_56_arg_1=-1] [L154] EXPR var_56_arg_0 & var_56_arg_1 VAL [mask_SORT_3=1, next_100_arg_1=0, state_15=0, state_17=0, state_20=0, var_29=1, var_52=-1] [L154] SORT_3 var_56 = var_56_arg_0 & var_56_arg_1; [L155] SORT_3 var_57_arg_0 = var_56; [L156] SORT_3 var_57 = ~var_57_arg_0; [L157] SORT_3 next_101_arg_1 = var_57; [L158] SORT_1 var_59_arg_0 = input_2; [L159] SORT_3 var_59 = var_59_arg_0 >> 0; [L160] SORT_1 var_60_arg_0 = input_2; [L161] SORT_3 var_60 = var_60_arg_0 >> 2; [L162] SORT_3 var_61_arg_0 = var_60; [L163] SORT_3 var_61 = ~var_61_arg_0; [L164] SORT_1 var_62_arg_0 = input_2; [L165] SORT_3 var_62 = var_62_arg_0 >> 1; [L166] SORT_3 var_63_arg_0 = var_61; [L167] SORT_3 var_63_arg_1 = var_62; VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, state_15=0, state_17=0, state_20=0, var_29=1, var_52=-1, var_59=255, var_63_arg_0=-64, var_63_arg_1=127] [L168] EXPR var_63_arg_0 | var_63_arg_1 VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, state_15=0, state_17=0, state_20=0, var_29=1, var_52=-1, var_59=255] [L168] SORT_3 var_63 = var_63_arg_0 | var_63_arg_1; [L169] SORT_3 var_64_arg_0 = var_59; [L170] SORT_3 var_64_arg_1 = var_63; VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, state_15=0, state_17=0, state_20=0, var_29=1, var_52=-1, var_64_arg_0=255, var_64_arg_1=254] [L171] EXPR var_64_arg_0 | var_64_arg_1 VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, state_15=0, state_17=0, state_20=0, var_29=1, var_52=-1] [L171] SORT_3 var_64 = var_64_arg_0 | var_64_arg_1; [L172] SORT_3 var_65_arg_0 = var_64; [L173] SORT_3 var_65 = ~var_65_arg_0; [L174] SORT_3 var_66_arg_0 = state_15; [L175] SORT_3 var_66_arg_1 = state_17; VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, state_15=0, state_17=0, state_20=0, var_29=1, var_52=-1, var_65=-2, var_66_arg_0=0, var_66_arg_1=0] [L176] EXPR var_66_arg_0 | var_66_arg_1 VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, state_15=0, state_17=0, state_20=0, var_29=1, var_52=-1, var_65=-2] [L176] SORT_3 var_66 = var_66_arg_0 | var_66_arg_1; [L177] SORT_3 var_67_arg_0 = var_65; [L178] SORT_3 var_67_arg_1 = var_66; VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, state_15=0, state_17=0, state_20=0, var_29=1, var_52=-1, var_65=-2, var_67_arg_0=-2, var_67_arg_1=0] [L179] EXPR var_67_arg_0 | var_67_arg_1 VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, state_15=0, state_17=0, state_20=0, var_29=1, var_52=-1, var_65=-2] [L179] SORT_3 var_67 = var_67_arg_0 | var_67_arg_1; [L180] SORT_3 var_68_arg_0 = var_67; [L181] SORT_3 var_68_arg_1 = var_52; VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, state_15=0, state_17=0, state_20=0, var_29=1, var_65=-2, var_68_arg_0=254, var_68_arg_1=-1] [L182] EXPR var_68_arg_0 & var_68_arg_1 VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, state_15=0, state_17=0, state_20=0, var_29=1, var_65=-2] [L182] SORT_3 var_68 = var_68_arg_0 & var_68_arg_1; [L183] SORT_3 next_102_arg_1 = var_68; [L184] SORT_3 var_85_arg_0 = var_65; [L185] SORT_3 var_85_arg_1 = state_17; VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, next_102_arg_1=1, state_15=0, state_20=0, var_29=1, var_85_arg_0=-2, var_85_arg_1=0] [L186] EXPR var_85_arg_0 | var_85_arg_1 VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, next_102_arg_1=1, state_15=0, state_20=0, var_29=1] [L186] SORT_3 var_85 = var_85_arg_0 | var_85_arg_1; [L187] SORT_3 var_86_arg_0 = var_85; [L188] SORT_3 var_86_arg_1 = state_15; VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, next_102_arg_1=1, state_20=0, var_29=1, var_86_arg_0=254, var_86_arg_1=0] [L189] EXPR var_86_arg_0 | var_86_arg_1 VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, next_102_arg_1=1, state_20=0, var_29=1] [L189] SORT_3 var_86 = var_86_arg_0 | var_86_arg_1; [L190] SORT_3 var_87_arg_0 = var_86; [L191] SORT_3 var_87_arg_1 = state_20; VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, next_102_arg_1=1, var_29=1, var_87_arg_0=254, var_87_arg_1=0] [L192] EXPR var_87_arg_0 | var_87_arg_1 VAL [mask_SORT_3=1, next_100_arg_1=0, next_101_arg_1=-256, next_102_arg_1=1, var_29=1] [L192] SORT_3 var_87 = var_87_arg_0 | var_87_arg_1; [L193] SORT_3 next_103_arg_1 = var_87; [L195] state_15 = next_100_arg_1 [L196] state_17 = next_101_arg_1 [L197] state_20 = next_102_arg_1 [L198] state_24 = next_103_arg_1 [L74] input_2 = __VERIFIER_nondet_uchar() [L75] input_4 = __VERIFIER_nondet_uchar() [L76] input_5 = __VERIFIER_nondet_uchar() [L77] input_6 = __VERIFIER_nondet_uchar() [L78] input_7 = __VERIFIER_nondet_uchar() [L79] input_8 = __VERIFIER_nondet_uchar() [L80] input_9 = __VERIFIER_nondet_uchar() [L81] input_10 = __VERIFIER_nondet_uchar() [L82] input_11 = __VERIFIER_nondet_uchar() [L83] input_13 = __VERIFIER_nondet_uchar() [L84] input_33 = __VERIFIER_nondet_uchar() [L85] input_35 = __VERIFIER_nondet_uchar() [L86] input_37 = __VERIFIER_nondet_uchar() [L87] input_39 = __VERIFIER_nondet_uchar() [L88] input_83 = __VERIFIER_nondet_uchar() [L89] input_89 = __VERIFIER_nondet_uchar() [L90] input_92 = __VERIFIER_nondet_uchar() [L91] input_94 = __VERIFIER_nondet_uchar() [L92] input_96 = __VERIFIER_nondet_uchar() [L93] input_98 = __VERIFIER_nondet_uchar() [L96] SORT_3 var_19_arg_0 = state_15; [L97] SORT_3 var_19_arg_1 = state_17; VAL [mask_SORT_3=1, state_15=0, state_17=-256, state_20=1, state_24=254, var_19_arg_0=0, var_19_arg_1=-256, var_29=1] [L98] EXPR var_19_arg_0 | var_19_arg_1 VAL [mask_SORT_3=1, state_15=0, state_17=-256, state_20=1, state_24=254, var_29=1] [L98] SORT_3 var_19 = var_19_arg_0 | var_19_arg_1; [L99] SORT_3 var_22_arg_0 = var_19; [L100] SORT_3 var_22_arg_1 = state_20; VAL [mask_SORT_3=1, state_15=0, state_17=-256, state_20=1, state_24=254, var_22_arg_0=0, var_22_arg_1=1, var_29=1] [L101] EXPR var_22_arg_0 | var_22_arg_1 VAL [mask_SORT_3=1, state_15=0, state_17=-256, state_20=1, state_24=254, var_29=1] [L101] SORT_3 var_22 = var_22_arg_0 | var_22_arg_1; [L102] SORT_3 var_23_arg_0 = var_22; [L103] SORT_3 var_23 = ~var_23_arg_0; [L104] SORT_3 var_26_arg_0 = var_23; [L105] SORT_3 var_26_arg_1 = state_24; VAL [mask_SORT_3=1, state_15=0, state_17=-256, state_20=1, var_26_arg_0=-2, var_26_arg_1=254, var_29=1] [L106] EXPR var_26_arg_0 | var_26_arg_1 VAL [mask_SORT_3=1, state_15=0, state_17=-256, state_20=1, var_29=1] [L106] SORT_3 var_26 = var_26_arg_0 | var_26_arg_1; [L107] SORT_3 var_30_arg_0 = var_26; [L108] SORT_3 var_30 = ~var_30_arg_0; [L109] SORT_3 var_31_arg_0 = var_29; [L110] SORT_3 var_31_arg_1 = var_30; VAL [mask_SORT_3=1, state_15=0, state_17=-256, state_20=1, var_29=1, var_31_arg_0=1, var_31_arg_1=-255] [L111] EXPR var_31_arg_0 & var_31_arg_1 VAL [mask_SORT_3=1, state_15=0, state_17=-256, state_20=1, var_29=1] [L111] SORT_3 var_31 = var_31_arg_0 & var_31_arg_1; [L112] EXPR var_31 & mask_SORT_3 VAL [mask_SORT_3=1, state_15=0, state_17=-256, state_20=1, var_29=1] [L112] var_31 = var_31 & mask_SORT_3 [L113] SORT_3 bad_32_arg_0 = var_31; [L114] CALL __VERIFIER_assert(!(bad_32_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 110 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.8s, OverallIterations: 36, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 21.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4703 SdHoareTripleChecker+Valid, 13.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4703 mSDsluCounter, 45954 SdHoareTripleChecker+Invalid, 11.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41672 mSDsCounter, 109 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24998 IncrementalHoareTripleChecker+Invalid, 25107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 109 mSolverCounterUnsat, 4282 mSDtfsCounter, 24998 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1942 GetRequests, 1152 SyntacticMatches, 5 SemanticMatches, 785 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11455 ImplicationChecksByTransitivity, 18.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1567occurred in iteration=35, InterpolantAutomatonStates: 519, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 35 MinimizatonAttempts, 1310 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 26.5s InterpolantComputationTime, 3260 NumberOfCodeBlocks, 3260 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 3669 ConstructedInterpolants, 0 QuantifiedInterpolants, 28274 SizeOfPredicates, 45 NumberOfNonLiveVariables, 4205 ConjunctsInSsa, 628 ConjunctsInUnsatCore, 52 InterpolantComputations, 28 PerfectInterpolantSequences, 433/559 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-05 20:12:44,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 64bit --witnessprinter.graph.data.programhash db87c07dbb7452fd246a98fbd617147a32e88270b5156b64dd08a046f6919e1f --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 20:12:46,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 20:12:46,625 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2025-02-05 20:12:46,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 20:12:46,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 20:12:46,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 20:12:46,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 20:12:46,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 20:12:46,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 20:12:46,659 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 20:12:46,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 20:12:46,659 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 20:12:46,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 20:12:46,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 20:12:46,660 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 20:12:46,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 20:12:46,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 20:12:46,660 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 20:12:46,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 20:12:46,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 20:12:46,661 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 20:12:46,661 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-05 20:12:46,661 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-05 20:12:46,661 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-05 20:12:46,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 20:12:46,661 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 20:12:46,661 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 20:12:46,661 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 20:12:46,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 20:12:46,662 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 20:12:46,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 20:12:46,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 20:12:46,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 20:12:46,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 20:12:46,663 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 20:12:46,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 20:12:46,663 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-05 20:12:46,663 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-05 20:12:46,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 20:12:46,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 20:12:46,663 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 20:12:46,663 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 20:12:46,663 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db87c07dbb7452fd246a98fbd617147a32e88270b5156b64dd08a046f6919e1f [2025-02-05 20:12:46,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 20:12:46,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 20:12:46,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 20:12:46,886 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 20:12:46,886 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 20:12:46,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2025-02-05 20:12:48,083 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f9a69a584/3f6004e3f72d4ad3996b252032e7e8ea/FLAG24f968147 [2025-02-05 20:12:48,283 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 20:12:48,283 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2025-02-05 20:12:48,292 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f9a69a584/3f6004e3f72d4ad3996b252032e7e8ea/FLAG24f968147 [2025-02-05 20:12:48,655 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f9a69a584/3f6004e3f72d4ad3996b252032e7e8ea [2025-02-05 20:12:48,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 20:12:48,657 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 20:12:48,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 20:12:48,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 20:12:48,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 20:12:48,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 08:12:48" (1/1) ... [2025-02-05 20:12:48,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e539e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48, skipping insertion in model container [2025-02-05 20:12:48,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 08:12:48" (1/1) ... [2025-02-05 20:12:48,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 20:12:48,746 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/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c[1259,1272] [2025-02-05 20:12:48,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 20:12:48,784 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 20:12:48,791 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/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c[1259,1272] [2025-02-05 20:12:48,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 20:12:48,819 INFO L204 MainTranslator]: Completed translation [2025-02-05 20:12:48,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48 WrapperNode [2025-02-05 20:12:48,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 20:12:48,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 20:12:48,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 20:12:48,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 20:12:48,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48" (1/1) ... [2025-02-05 20:12:48,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48" (1/1) ... [2025-02-05 20:12:48,844 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 227 [2025-02-05 20:12:48,844 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 20:12:48,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 20:12:48,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 20:12:48,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 20:12:48,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48" (1/1) ... [2025-02-05 20:12:48,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48" (1/1) ... [2025-02-05 20:12:48,852 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48" (1/1) ... [2025-02-05 20:12:48,858 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 20:12:48,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48" (1/1) ... [2025-02-05 20:12:48,858 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48" (1/1) ... [2025-02-05 20:12:48,862 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48" (1/1) ... [2025-02-05 20:12:48,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48" (1/1) ... [2025-02-05 20:12:48,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48" (1/1) ... [2025-02-05 20:12:48,864 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48" (1/1) ... [2025-02-05 20:12:48,866 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 20:12:48,866 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 20:12:48,866 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 20:12:48,867 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 20:12:48,867 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48" (1/1) ... [2025-02-05 20:12:48,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 20:12:48,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 20:12:48,895 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 20:12:48,898 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 20:12:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 20:12:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-05 20:12:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 20:12:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 20:12:49,005 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 20:12:49,007 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 20:12:49,211 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2025-02-05 20:12:49,211 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 20:12:49,219 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 20:12:49,219 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 20:12:49,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 08:12:49 BoogieIcfgContainer [2025-02-05 20:12:49,219 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 20:12:49,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 20:12:49,222 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 20:12:49,225 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 20:12:49,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 08:12:48" (1/3) ... [2025-02-05 20:12:49,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7707c647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 08:12:49, skipping insertion in model container [2025-02-05 20:12:49,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 08:12:48" (2/3) ... [2025-02-05 20:12:49,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7707c647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 08:12:49, skipping insertion in model container [2025-02-05 20:12:49,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 08:12:49" (3/3) ... [2025-02-05 20:12:49,227 INFO L128 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2025-02-05 20:12:49,237 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 20:12:49,238 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.vis_QF_BV_s1269b_p3.c that has 1 procedures, 10 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 20:12:49,272 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 20:12:49,280 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;@4a68308d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 20:12:49,280 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 20:12:49,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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 20:12:49,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-05 20:12:49,287 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:49,287 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-05 20:12:49,288 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:49,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:49,291 INFO L85 PathProgramCache]: Analyzing trace with hash 38140359, now seen corresponding path program 1 times [2025-02-05 20:12:49,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 20:12:49,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730576838] [2025-02-05 20:12:49,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:49,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:12:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 20:12:49,302 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 20:12:49,309 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 20:12:49,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-05 20:12:49,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-05 20:12:49,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:49,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:49,426 WARN L254 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-05 20:12:49,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 20:12:49,625 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 20:12:49,627 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 20:12:49,627 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-05 20:12:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730576838] [2025-02-05 20:12:49,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730576838] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 20:12:49,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 20:12:49,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 20:12:49,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503385385] [2025-02-05 20:12:49,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:49,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 20:12:49,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-05 20:12:49,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 20:12:49,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-05 20:12:49,646 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:12:49,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:49,686 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2025-02-05 20:12:49,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 20:12:49,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2025-02-05 20:12:49,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:49,692 INFO L225 Difference]: With dead ends: 18 [2025-02-05 20:12:49,692 INFO L226 Difference]: Without dead ends: 10 [2025-02-05 20:12:49,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-05 20:12:49,697 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 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 20:12:49,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 20:12:49,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2025-02-05 20:12:49,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2025-02-05 20:12:49,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:12:49,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2025-02-05 20:12:49,716 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2025-02-05 20:12:49,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:49,716 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2025-02-05 20:12:49,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 20:12:49,716 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2025-02-05 20:12:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-05 20:12:49,717 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 20:12:49,717 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-05 20:12:49,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 20:12:49,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:12:49,921 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 20:12:49,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 20:12:49,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1926026653, now seen corresponding path program 1 times [2025-02-05 20:12:49,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-05 20:12:49,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91975401] [2025-02-05 20:12:49,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 20:12:49,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:12:49,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 20:12:49,927 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 20:12:49,928 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 20:12:50,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-05 20:12:50,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-05 20:12:50,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 20:12:50,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 20:12:50,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-05 20:12:50,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 20:12:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:50,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 20:12:50,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 20:12:50,294 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-05 20:12:50,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91975401] [2025-02-05 20:12:50,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91975401] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-05 20:12:50,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 20:12:50,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-02-05 20:12:50,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534375329] [2025-02-05 20:12:50,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 20:12:50,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 20:12:50,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-05 20:12:50,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 20:12:50,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-05 20:12:50,296 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:12:50,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 20:12:50,310 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2025-02-05 20:12:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 20:12:50,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-05 20:12:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 20:12:50,311 INFO L225 Difference]: With dead ends: 9 [2025-02-05 20:12:50,311 INFO L226 Difference]: Without dead ends: 0 [2025-02-05 20:12:50,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-05 20:12:50,311 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 20:12:50,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 20:12:50,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-05 20:12:50,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-05 20:12:50,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:12:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-05 20:12:50,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2025-02-05 20:12:50,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 20:12:50,312 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-05 20:12:50,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 20:12:50,312 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-05 20:12:50,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-05 20:12:50,314 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-05 20:12:50,322 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 20:12:50,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 20:12:50,518 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-05 20:12:50,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-05 20:12:50,537 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-05 20:12:50,542 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2025-02-05 20:12:50,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 08:12:50 BoogieIcfgContainer [2025-02-05 20:12:50,544 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-05 20:12:50,545 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-05 20:12:50,545 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-05 20:12:50,545 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-05 20:12:50,546 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 08:12:49" (3/4) ... [2025-02-05 20:12:50,547 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-05 20:12:50,557 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-02-05 20:12:50,558 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-05 20:12:50,558 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-05 20:12:50,558 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-05 20:12:50,616 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-05 20:12:50,616 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-05 20:12:50,616 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-05 20:12:50,617 INFO L158 Benchmark]: Toolchain (without parser) took 1959.55ms. Allocated memory is still 117.4MB. Free memory was 91.7MB in the beginning and 49.1MB in the end (delta: 42.5MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2025-02-05 20:12:50,617 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 20:12:50,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.58ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 76.8MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-05 20:12:50,617 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.68ms. Allocated memory is still 117.4MB. Free memory was 76.8MB in the beginning and 74.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 20:12:50,618 INFO L158 Benchmark]: Boogie Preprocessor took 21.67ms. Allocated memory is still 117.4MB. Free memory was 74.7MB in the beginning and 72.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 20:12:50,618 INFO L158 Benchmark]: IcfgBuilder took 352.60ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 52.2MB in the end (delta: 20.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-05 20:12:50,618 INFO L158 Benchmark]: TraceAbstraction took 1322.76ms. Allocated memory is still 117.4MB. Free memory was 51.7MB in the beginning and 56.7MB in the end (delta: -5.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 20:12:50,618 INFO L158 Benchmark]: Witness Printer took 71.61ms. Allocated memory is still 117.4MB. Free memory was 56.7MB in the beginning and 49.1MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 20:12:50,619 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 161.58ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 76.8MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.68ms. Allocated memory is still 117.4MB. Free memory was 76.8MB in the beginning and 74.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.67ms. Allocated memory is still 117.4MB. Free memory was 74.7MB in the beginning and 72.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 352.60ms. Allocated memory is still 117.4MB. Free memory was 72.6MB in the beginning and 52.2MB in the end (delta: 20.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1322.76ms. Allocated memory is still 117.4MB. Free memory was 51.7MB in the beginning and 56.7MB in the end (delta: -5.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 71.61ms. Allocated memory is still 117.4MB. Free memory was 56.7MB in the beginning and 49.1MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 7 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 2 QuantifiedInterpolants, 203 SizeOfPredicates, 9 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-05 20:12:50,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE