./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-83.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-83.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b7d7572b4223b408ecca691daf97dc79641f0b4c97b6315410d3e8868a73776 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 19:51:54,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 19:51:54,436 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 19:51:54,440 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 19:51:54,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 19:51:54,459 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 19:51:54,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 19:51:54,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 19:51:54,460 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 19:51:54,460 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 19:51:54,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 19:51:54,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 19:51:54,461 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 19:51:54,462 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 19:51:54,462 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 19:51:54,462 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 19:51:54,462 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 19:51:54,462 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 19:51:54,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 19:51:54,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 19:51:54,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 19:51:54,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 19:51:54,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 19:51:54,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 19:51:54,463 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 19:51:54,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 19:51:54,463 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 19:51:54,464 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 19:51:54,464 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 19:51:54,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 19:51:54,464 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 19:51:54,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 19:51:54,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 19:51:54,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 19:51:54,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 19:51:54,465 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 19:51:54,465 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 19:51:54,465 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 19:51:54,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 19:51:54,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 19:51:54,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 19:51:54,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 19:51:54,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 19:51:54,466 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/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b7d7572b4223b408ecca691daf97dc79641f0b4c97b6315410d3e8868a73776 [2025-03-03 19:51:54,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 19:51:54,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 19:51:54,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 19:51:54,695 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 19:51:54,696 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 19:51:54,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-83.i [2025-03-03 19:51:55,767 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7028963c8/24e4cd4f4e624c789e4f37dc88864372/FLAG866b269f4 [2025-03-03 19:51:55,991 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 19:51:55,992 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-83.i [2025-03-03 19:51:56,002 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7028963c8/24e4cd4f4e624c789e4f37dc88864372/FLAG866b269f4 [2025-03-03 19:51:56,014 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7028963c8/24e4cd4f4e624c789e4f37dc88864372 [2025-03-03 19:51:56,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 19:51:56,017 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 19:51:56,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 19:51:56,018 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 19:51:56,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 19:51:56,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 07:51:56" (1/1) ... [2025-03-03 19:51:56,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@398c1f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56, skipping insertion in model container [2025-03-03 19:51:56,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 07:51:56" (1/1) ... [2025-03-03 19:51:56,050 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 19:51:56,143 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-83.i[916,929] [2025-03-03 19:51:56,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 19:51:56,248 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 19:51:56,255 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-83.i[916,929] [2025-03-03 19:51:56,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 19:51:56,321 INFO L204 MainTranslator]: Completed translation [2025-03-03 19:51:56,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56 WrapperNode [2025-03-03 19:51:56,323 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 19:51:56,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 19:51:56,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 19:51:56,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 19:51:56,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56" (1/1) ... [2025-03-03 19:51:56,340 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56" (1/1) ... [2025-03-03 19:51:56,394 INFO L138 Inliner]: procedures = 26, calls = 102, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 695 [2025-03-03 19:51:56,394 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 19:51:56,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 19:51:56,395 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 19:51:56,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 19:51:56,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56" (1/1) ... [2025-03-03 19:51:56,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56" (1/1) ... [2025-03-03 19:51:56,408 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56" (1/1) ... [2025-03-03 19:51:56,443 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]. [2025-03-03 19:51:56,444 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56" (1/1) ... [2025-03-03 19:51:56,444 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56" (1/1) ... [2025-03-03 19:51:56,465 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56" (1/1) ... [2025-03-03 19:51:56,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56" (1/1) ... [2025-03-03 19:51:56,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56" (1/1) ... [2025-03-03 19:51:56,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56" (1/1) ... [2025-03-03 19:51:56,496 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 19:51:56,498 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 19:51:56,498 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 19:51:56,499 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 19:51:56,500 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56" (1/1) ... [2025-03-03 19:51:56,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 19:51:56,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:51:56,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 19:51:56,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 19:51:56,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 19:51:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 19:51:56,540 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 19:51:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 19:51:56,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 19:51:56,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 19:51:56,627 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 19:51:56,629 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 19:51:57,338 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L440: havoc property_#t~ite75#1;havoc property_#t~bitwise73#1;havoc property_#t~bitwise74#1;havoc property_#t~short76#1; [2025-03-03 19:51:57,442 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2025-03-03 19:51:57,442 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 19:51:57,473 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 19:51:57,475 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 19:51:57,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 07:51:57 BoogieIcfgContainer [2025-03-03 19:51:57,476 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 19:51:57,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 19:51:57,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 19:51:57,480 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 19:51:57,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 07:51:56" (1/3) ... [2025-03-03 19:51:57,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f810b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 07:51:57, skipping insertion in model container [2025-03-03 19:51:57,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:51:56" (2/3) ... [2025-03-03 19:51:57,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f810b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 07:51:57, skipping insertion in model container [2025-03-03 19:51:57,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 07:51:57" (3/3) ... [2025-03-03 19:51:57,482 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-83.i [2025-03-03 19:51:57,490 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 19:51:57,492 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-83.i that has 2 procedures, 284 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 19:51:57,542 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 19:51:57,552 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;@357c59ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 19:51:57,552 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 19:51:57,557 INFO L276 IsEmpty]: Start isEmpty. Operand has 284 states, 192 states have (on average 1.53125) internal successors, (294), 193 states have internal predecessors, (294), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2025-03-03 19:51:57,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2025-03-03 19:51:57,580 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:51:57,580 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:51:57,581 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:51:57,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:51:57,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1125803079, now seen corresponding path program 1 times [2025-03-03 19:51:57,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:51:57,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955945654] [2025-03-03 19:51:57,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:51:57,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:51:57,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 557 statements into 1 equivalence classes. [2025-03-03 19:51:57,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 557 of 557 statements. [2025-03-03 19:51:57,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:51:57,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:51:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 15488 trivial. 0 not checked. [2025-03-03 19:51:58,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:51:58,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955945654] [2025-03-03 19:51:58,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955945654] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 19:51:58,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886185867] [2025-03-03 19:51:58,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:51:58,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:51:58,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:51:58,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 19:51:58,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 19:51:58,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 557 statements into 1 equivalence classes. [2025-03-03 19:51:58,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 557 of 557 statements. [2025-03-03 19:51:58,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:51:58,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:51:58,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 19:51:58,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 19:51:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 15488 trivial. 0 not checked. [2025-03-03 19:51:58,374 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 19:51:58,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886185867] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:51:58,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 19:51:58,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 19:51:58,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304959552] [2025-03-03 19:51:58,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:51:58,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 19:51:58,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:51:58,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 19:51:58,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 19:51:58,414 INFO L87 Difference]: Start difference. First operand has 284 states, 192 states have (on average 1.53125) internal successors, (294), 193 states have internal predecessors, (294), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2025-03-03 19:51:58,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:51:58,490 INFO L93 Difference]: Finished difference Result 562 states and 1028 transitions. [2025-03-03 19:51:58,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 19:51:58,492 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) Word has length 557 [2025-03-03 19:51:58,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:51:58,499 INFO L225 Difference]: With dead ends: 562 [2025-03-03 19:51:58,499 INFO L226 Difference]: Without dead ends: 281 [2025-03-03 19:51:58,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 19:51:58,505 INFO L435 NwaCegarLoop]: 447 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 19:51:58,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 447 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 19:51:58,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2025-03-03 19:51:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2025-03-03 19:51:58,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 190 states have (on average 1.5210526315789474) internal successors, (289), 190 states have internal predecessors, (289), 89 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 89 states have call predecessors, (89), 89 states have call successors, (89) [2025-03-03 19:51:58,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 467 transitions. [2025-03-03 19:51:58,571 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 467 transitions. Word has length 557 [2025-03-03 19:51:58,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:51:58,573 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 467 transitions. [2025-03-03 19:51:58,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (89), 2 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 2 states have call successors, (89) [2025-03-03 19:51:58,574 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 467 transitions. [2025-03-03 19:51:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2025-03-03 19:51:58,585 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:51:58,585 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:51:58,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 19:51:58,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-03 19:51:58,786 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:51:58,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:51:58,787 INFO L85 PathProgramCache]: Analyzing trace with hash 660662548, now seen corresponding path program 1 times [2025-03-03 19:51:58,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:51:58,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032870291] [2025-03-03 19:51:58,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:51:58,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:51:58,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 557 statements into 1 equivalence classes. [2025-03-03 19:51:58,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 557 of 557 statements. [2025-03-03 19:51:58,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:51:58,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:51:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2025-03-03 19:51:59,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:51:59,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032870291] [2025-03-03 19:51:59,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032870291] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:51:59,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:51:59,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 19:51:59,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243103955] [2025-03-03 19:51:59,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:51:59,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 19:51:59,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:51:59,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 19:51:59,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 19:51:59,288 INFO L87 Difference]: Start difference. First operand 281 states and 467 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2025-03-03 19:51:59,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:51:59,397 INFO L93 Difference]: Finished difference Result 732 states and 1218 transitions. [2025-03-03 19:51:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 19:51:59,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 557 [2025-03-03 19:51:59,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:51:59,405 INFO L225 Difference]: With dead ends: 732 [2025-03-03 19:51:59,405 INFO L226 Difference]: Without dead ends: 454 [2025-03-03 19:51:59,406 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 [2025-03-03 19:51:59,407 INFO L435 NwaCegarLoop]: 445 mSDtfsCounter, 266 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 19:51:59,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 879 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 19:51:59,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2025-03-03 19:51:59,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 451. [2025-03-03 19:51:59,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 315 states have (on average 1.5365079365079366) internal successors, (484), 316 states have internal predecessors, (484), 133 states have call successors, (133), 2 states have call predecessors, (133), 2 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2025-03-03 19:51:59,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 750 transitions. [2025-03-03 19:51:59,462 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 750 transitions. Word has length 557 [2025-03-03 19:51:59,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:51:59,464 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 750 transitions. [2025-03-03 19:51:59,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2025-03-03 19:51:59,464 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 750 transitions. [2025-03-03 19:51:59,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2025-03-03 19:51:59,470 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:51:59,470 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:51:59,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 19:51:59,470 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:51:59,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:51:59,471 INFO L85 PathProgramCache]: Analyzing trace with hash 903033268, now seen corresponding path program 1 times [2025-03-03 19:51:59,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:51:59,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298333630] [2025-03-03 19:51:59,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:51:59,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:51:59,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 557 statements into 1 equivalence classes. [2025-03-03 19:51:59,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 557 of 557 statements. [2025-03-03 19:51:59,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:51:59,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 84 proven. 180 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2025-03-03 19:52:00,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:00,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298333630] [2025-03-03 19:52:00,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298333630] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 19:52:00,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023599475] [2025-03-03 19:52:00,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:00,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:52:00,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:52:00,501 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 19:52:00,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 19:52:00,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 557 statements into 1 equivalence classes. [2025-03-03 19:52:00,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 557 of 557 statements. [2025-03-03 19:52:00,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:00,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:00,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 19:52:00,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 19:52:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7648 proven. 156 refuted. 0 times theorem prover too weak. 7860 trivial. 0 not checked. [2025-03-03 19:52:01,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 19:52:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 108 proven. 156 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2025-03-03 19:52:01,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023599475] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 19:52:01,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 19:52:01,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-03-03 19:52:01,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886743081] [2025-03-03 19:52:01,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 19:52:01,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 19:52:01,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:01,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 19:52:01,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-03 19:52:01,598 INFO L87 Difference]: Start difference. First operand 451 states and 750 transitions. Second operand has 9 states, 9 states have (on average 24.333333333333332) internal successors, (219), 9 states have internal predecessors, (219), 4 states have call successors, (201), 2 states have call predecessors, (201), 4 states have return successors, (203), 4 states have call predecessors, (203), 4 states have call successors, (203) [2025-03-03 19:52:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:02,187 INFO L93 Difference]: Finished difference Result 919 states and 1513 transitions. [2025-03-03 19:52:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 19:52:02,188 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 24.333333333333332) internal successors, (219), 9 states have internal predecessors, (219), 4 states have call successors, (201), 2 states have call predecessors, (201), 4 states have return successors, (203), 4 states have call predecessors, (203), 4 states have call successors, (203) Word has length 557 [2025-03-03 19:52:02,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:02,195 INFO L225 Difference]: With dead ends: 919 [2025-03-03 19:52:02,196 INFO L226 Difference]: Without dead ends: 471 [2025-03-03 19:52:02,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 1111 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2025-03-03 19:52:02,198 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 491 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:02,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 775 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 19:52:02,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2025-03-03 19:52:02,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 467. [2025-03-03 19:52:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 327 states have (on average 1.4984709480122325) internal successors, (490), 328 states have internal predecessors, (490), 133 states have call successors, (133), 6 states have call predecessors, (133), 6 states have return successors, (133), 132 states have call predecessors, (133), 133 states have call successors, (133) [2025-03-03 19:52:02,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 756 transitions. [2025-03-03 19:52:02,252 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 756 transitions. Word has length 557 [2025-03-03 19:52:02,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:02,253 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 756 transitions. [2025-03-03 19:52:02,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.333333333333332) internal successors, (219), 9 states have internal predecessors, (219), 4 states have call successors, (201), 2 states have call predecessors, (201), 4 states have return successors, (203), 4 states have call predecessors, (203), 4 states have call successors, (203) [2025-03-03 19:52:02,253 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 756 transitions. [2025-03-03 19:52:02,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2025-03-03 19:52:02,256 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:02,256 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:52:02,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 19:52:02,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-03 19:52:02,457 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:02,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:02,458 INFO L85 PathProgramCache]: Analyzing trace with hash 588210247, now seen corresponding path program 1 times [2025-03-03 19:52:02,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:02,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816697515] [2025-03-03 19:52:02,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:02,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:02,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 559 statements into 1 equivalence classes. [2025-03-03 19:52:02,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 559 of 559 statements. [2025-03-03 19:52:02,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:02,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2025-03-03 19:52:02,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:02,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816697515] [2025-03-03 19:52:02,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816697515] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:52:02,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:52:02,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 19:52:02,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665073980] [2025-03-03 19:52:02,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:52:02,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 19:52:02,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:02,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 19:52:02,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 19:52:02,819 INFO L87 Difference]: Start difference. First operand 467 states and 756 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2025-03-03 19:52:03,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:03,398 INFO L93 Difference]: Finished difference Result 1739 states and 2818 transitions. [2025-03-03 19:52:03,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 19:52:03,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 559 [2025-03-03 19:52:03,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:03,409 INFO L225 Difference]: With dead ends: 1739 [2025-03-03 19:52:03,409 INFO L226 Difference]: Without dead ends: 1275 [2025-03-03 19:52:03,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 19:52:03,411 INFO L435 NwaCegarLoop]: 422 mSDtfsCounter, 799 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:03,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 1488 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 19:52:03,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2025-03-03 19:52:03,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 852. [2025-03-03 19:52:03,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 608 states have (on average 1.5148026315789473) internal successors, (921), 611 states have internal predecessors, (921), 231 states have call successors, (231), 12 states have call predecessors, (231), 12 states have return successors, (231), 228 states have call predecessors, (231), 231 states have call successors, (231) [2025-03-03 19:52:03,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1383 transitions. [2025-03-03 19:52:03,488 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1383 transitions. Word has length 559 [2025-03-03 19:52:03,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:03,488 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1383 transitions. [2025-03-03 19:52:03,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2025-03-03 19:52:03,489 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1383 transitions. [2025-03-03 19:52:03,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2025-03-03 19:52:03,492 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:03,493 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:52:03,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 19:52:03,493 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:03,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:03,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1662269147, now seen corresponding path program 1 times [2025-03-03 19:52:03,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:03,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434462815] [2025-03-03 19:52:03,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:03,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:03,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 560 statements into 1 equivalence classes. [2025-03-03 19:52:03,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 560 of 560 statements. [2025-03-03 19:52:03,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:03,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 144 proven. 120 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2025-03-03 19:52:04,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:04,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434462815] [2025-03-03 19:52:04,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434462815] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 19:52:04,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96459791] [2025-03-03 19:52:04,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:04,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:52:04,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:52:04,108 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 19:52:04,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 19:52:04,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 560 statements into 1 equivalence classes. [2025-03-03 19:52:04,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 560 of 560 statements. [2025-03-03 19:52:04,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:04,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:04,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-03 19:52:04,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 19:52:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 10688 proven. 189 refuted. 0 times theorem prover too weak. 4787 trivial. 0 not checked. [2025-03-03 19:52:05,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 19:52:05,689 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 333 proven. 192 refuted. 0 times theorem prover too weak. 15139 trivial. 0 not checked. [2025-03-03 19:52:05,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96459791] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 19:52:05,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 19:52:05,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 21 [2025-03-03 19:52:05,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906695232] [2025-03-03 19:52:05,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 19:52:05,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-03 19:52:05,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:05,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-03 19:52:05,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2025-03-03 19:52:05,695 INFO L87 Difference]: Start difference. First operand 852 states and 1383 transitions. Second operand has 21 states, 20 states have (on average 13.5) internal successors, (270), 21 states have internal predecessors, (270), 10 states have call successors, (189), 5 states have call predecessors, (189), 9 states have return successors, (191), 10 states have call predecessors, (191), 10 states have call successors, (191) [2025-03-03 19:52:07,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:07,500 INFO L93 Difference]: Finished difference Result 2445 states and 3880 transitions. [2025-03-03 19:52:07,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-03-03 19:52:07,500 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 13.5) internal successors, (270), 21 states have internal predecessors, (270), 10 states have call successors, (189), 5 states have call predecessors, (189), 9 states have return successors, (191), 10 states have call predecessors, (191), 10 states have call successors, (191) Word has length 560 [2025-03-03 19:52:07,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:07,527 INFO L225 Difference]: With dead ends: 2445 [2025-03-03 19:52:07,528 INFO L226 Difference]: Without dead ends: 1596 [2025-03-03 19:52:07,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1160 GetRequests, 1110 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=837, Invalid=1815, Unknown=0, NotChecked=0, Total=2652 [2025-03-03 19:52:07,531 INFO L435 NwaCegarLoop]: 387 mSDtfsCounter, 1626 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 731 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 2437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 731 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:07,531 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 1776 Invalid, 2437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [731 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-03 19:52:07,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2025-03-03 19:52:07,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1089. [2025-03-03 19:52:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 792 states have (on average 1.4911616161616161) internal successors, (1181), 796 states have internal predecessors, (1181), 269 states have call successors, (269), 27 states have call predecessors, (269), 27 states have return successors, (269), 265 states have call predecessors, (269), 269 states have call successors, (269) [2025-03-03 19:52:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1719 transitions. [2025-03-03 19:52:07,607 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1719 transitions. Word has length 560 [2025-03-03 19:52:07,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:07,609 INFO L471 AbstractCegarLoop]: Abstraction has 1089 states and 1719 transitions. [2025-03-03 19:52:07,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 13.5) internal successors, (270), 21 states have internal predecessors, (270), 10 states have call successors, (189), 5 states have call predecessors, (189), 9 states have return successors, (191), 10 states have call predecessors, (191), 10 states have call successors, (191) [2025-03-03 19:52:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1719 transitions. [2025-03-03 19:52:07,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2025-03-03 19:52:07,613 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:07,613 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:52:07,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 19:52:07,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:52:07,814 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:07,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:07,815 INFO L85 PathProgramCache]: Analyzing trace with hash 768304603, now seen corresponding path program 1 times [2025-03-03 19:52:07,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:07,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550902095] [2025-03-03 19:52:07,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:07,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:07,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 560 statements into 1 equivalence classes. [2025-03-03 19:52:08,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 560 of 560 statements. [2025-03-03 19:52:08,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:08,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 84 proven. 180 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2025-03-03 19:52:08,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:08,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550902095] [2025-03-03 19:52:08,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550902095] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 19:52:08,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079682423] [2025-03-03 19:52:08,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:08,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:52:08,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:52:08,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 19:52:08,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 19:52:08,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 560 statements into 1 equivalence classes. [2025-03-03 19:52:09,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 560 of 560 statements. [2025-03-03 19:52:09,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:09,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:09,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-03 19:52:09,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 19:52:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 8799 proven. 468 refuted. 0 times theorem prover too weak. 6397 trivial. 0 not checked. [2025-03-03 19:52:10,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 19:52:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 114 proven. 150 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2025-03-03 19:52:12,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079682423] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 19:52:12,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 19:52:12,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 14, 15] total 33 [2025-03-03 19:52:12,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253023778] [2025-03-03 19:52:12,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 19:52:12,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-03 19:52:12,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:12,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-03 19:52:12,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2025-03-03 19:52:12,744 INFO L87 Difference]: Start difference. First operand 1089 states and 1719 transitions. Second operand has 33 states, 33 states have (on average 8.636363636363637) internal successors, (285), 32 states have internal predecessors, (285), 7 states have call successors, (238), 5 states have call predecessors, (238), 9 states have return successors, (239), 7 states have call predecessors, (239), 7 states have call successors, (239) [2025-03-03 19:52:37,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:37,637 INFO L93 Difference]: Finished difference Result 28571 states and 46119 transitions. [2025-03-03 19:52:37,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 310 states. [2025-03-03 19:52:37,638 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 8.636363636363637) internal successors, (285), 32 states have internal predecessors, (285), 7 states have call successors, (238), 5 states have call predecessors, (238), 9 states have return successors, (239), 7 states have call predecessors, (239), 7 states have call successors, (239) Word has length 560 [2025-03-03 19:52:37,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:37,731 INFO L225 Difference]: With dead ends: 28571 [2025-03-03 19:52:37,731 INFO L226 Difference]: Without dead ends: 27485 [2025-03-03 19:52:37,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1465 GetRequests, 1138 SyntacticMatches, 0 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49727 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=13310, Invalid=94602, Unknown=0, NotChecked=0, Total=107912 [2025-03-03 19:52:37,758 INFO L435 NwaCegarLoop]: 1304 mSDtfsCounter, 31181 mSDsluCounter, 14255 mSDsCounter, 0 mSdLazyCounter, 12562 mSolverCounterSat, 6129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31245 SdHoareTripleChecker+Valid, 15559 SdHoareTripleChecker+Invalid, 18691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6129 IncrementalHoareTripleChecker+Valid, 12562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:37,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31245 Valid, 15559 Invalid, 18691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6129 Valid, 12562 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2025-03-03 19:52:37,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27485 states. [2025-03-03 19:52:38,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27485 to 9836. [2025-03-03 19:52:38,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9836 states, 8045 states have (on average 1.5742697327532629) internal successors, (12665), 8096 states have internal predecessors, (12665), 1636 states have call successors, (1636), 154 states have call predecessors, (1636), 154 states have return successors, (1636), 1585 states have call predecessors, (1636), 1636 states have call successors, (1636) [2025-03-03 19:52:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9836 states to 9836 states and 15937 transitions. [2025-03-03 19:52:38,664 INFO L78 Accepts]: Start accepts. Automaton has 9836 states and 15937 transitions. Word has length 560 [2025-03-03 19:52:38,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:38,664 INFO L471 AbstractCegarLoop]: Abstraction has 9836 states and 15937 transitions. [2025-03-03 19:52:38,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.636363636363637) internal successors, (285), 32 states have internal predecessors, (285), 7 states have call successors, (238), 5 states have call predecessors, (238), 9 states have return successors, (239), 7 states have call predecessors, (239), 7 states have call successors, (239) [2025-03-03 19:52:38,669 INFO L276 IsEmpty]: Start isEmpty. Operand 9836 states and 15937 transitions. [2025-03-03 19:52:38,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2025-03-03 19:52:38,679 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:38,679 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:52:38,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 19:52:38,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:52:38,881 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:38,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:38,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1686682522, now seen corresponding path program 1 times [2025-03-03 19:52:38,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:38,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865047465] [2025-03-03 19:52:38,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:38,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:38,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 560 statements into 1 equivalence classes. [2025-03-03 19:52:38,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 560 of 560 statements. [2025-03-03 19:52:38,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:38,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2025-03-03 19:52:39,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:39,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865047465] [2025-03-03 19:52:39,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865047465] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:52:39,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:52:39,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-03 19:52:39,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264181775] [2025-03-03 19:52:39,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:52:39,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 19:52:39,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:39,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 19:52:39,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-03 19:52:39,377 INFO L87 Difference]: Start difference. First operand 9836 states and 15937 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2025-03-03 19:52:42,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:42,020 INFO L93 Difference]: Finished difference Result 36579 states and 59446 transitions. [2025-03-03 19:52:42,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 19:52:42,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 560 [2025-03-03 19:52:42,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:42,118 INFO L225 Difference]: With dead ends: 36579 [2025-03-03 19:52:42,118 INFO L226 Difference]: Without dead ends: 26746 [2025-03-03 19:52:42,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-03-03 19:52:42,148 INFO L435 NwaCegarLoop]: 1157 mSDtfsCounter, 1870 mSDsluCounter, 2924 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 4081 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:42,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 4081 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 19:52:42,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26746 states. [2025-03-03 19:52:43,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26746 to 20945. [2025-03-03 19:52:43,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20945 states, 17662 states have (on average 1.5927980976106897) internal successors, (28132), 17759 states have internal predecessors, (28132), 3013 states have call successors, (3013), 269 states have call predecessors, (3013), 269 states have return successors, (3013), 2916 states have call predecessors, (3013), 3013 states have call successors, (3013) [2025-03-03 19:52:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20945 states to 20945 states and 34158 transitions. [2025-03-03 19:52:43,741 INFO L78 Accepts]: Start accepts. Automaton has 20945 states and 34158 transitions. Word has length 560 [2025-03-03 19:52:43,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:43,742 INFO L471 AbstractCegarLoop]: Abstraction has 20945 states and 34158 transitions. [2025-03-03 19:52:43,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2025-03-03 19:52:43,742 INFO L276 IsEmpty]: Start isEmpty. Operand 20945 states and 34158 transitions. [2025-03-03 19:52:43,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2025-03-03 19:52:43,757 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:43,757 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:52:43,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 19:52:43,757 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:43,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:43,758 INFO L85 PathProgramCache]: Analyzing trace with hash -761418564, now seen corresponding path program 1 times [2025-03-03 19:52:43,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:43,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222236921] [2025-03-03 19:52:43,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:43,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:43,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 560 statements into 1 equivalence classes. [2025-03-03 19:52:43,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 560 of 560 statements. [2025-03-03 19:52:43,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:43,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:44,090 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2025-03-03 19:52:44,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:44,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222236921] [2025-03-03 19:52:44,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222236921] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:52:44,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:52:44,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 19:52:44,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461284388] [2025-03-03 19:52:44,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:52:44,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 19:52:44,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:44,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 19:52:44,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 19:52:44,092 INFO L87 Difference]: Start difference. First operand 20945 states and 34158 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2025-03-03 19:52:45,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:45,782 INFO L93 Difference]: Finished difference Result 38042 states and 62057 transitions. [2025-03-03 19:52:45,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 19:52:45,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 560 [2025-03-03 19:52:45,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:45,839 INFO L225 Difference]: With dead ends: 38042 [2025-03-03 19:52:45,839 INFO L226 Difference]: Without dead ends: 17100 [2025-03-03 19:52:45,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 19:52:45,880 INFO L435 NwaCegarLoop]: 608 mSDtfsCounter, 299 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:45,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1528 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 19:52:45,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17100 states. [2025-03-03 19:52:46,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17100 to 10360. [2025-03-03 19:52:46,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10360 states, 8689 states have (on average 1.5848774312348948) internal successors, (13771), 8726 states have internal predecessors, (13771), 1496 states have call successors, (1496), 174 states have call predecessors, (1496), 174 states have return successors, (1496), 1459 states have call predecessors, (1496), 1496 states have call successors, (1496) [2025-03-03 19:52:46,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10360 states to 10360 states and 16763 transitions. [2025-03-03 19:52:46,656 INFO L78 Accepts]: Start accepts. Automaton has 10360 states and 16763 transitions. Word has length 560 [2025-03-03 19:52:46,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:46,657 INFO L471 AbstractCegarLoop]: Abstraction has 10360 states and 16763 transitions. [2025-03-03 19:52:46,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2025-03-03 19:52:46,658 INFO L276 IsEmpty]: Start isEmpty. Operand 10360 states and 16763 transitions. [2025-03-03 19:52:46,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2025-03-03 19:52:46,665 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:46,665 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:52:46,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-03 19:52:46,665 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:46,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:46,666 INFO L85 PathProgramCache]: Analyzing trace with hash 233531247, now seen corresponding path program 1 times [2025-03-03 19:52:46,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:46,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026014856] [2025-03-03 19:52:46,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:46,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:46,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 561 statements into 1 equivalence classes. [2025-03-03 19:52:46,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 561 of 561 statements. [2025-03-03 19:52:46,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:46,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 108 proven. 156 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2025-03-03 19:52:47,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:47,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026014856] [2025-03-03 19:52:47,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026014856] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 19:52:47,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545572666] [2025-03-03 19:52:47,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:47,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:52:47,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:52:47,416 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 19:52:47,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 19:52:47,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 561 statements into 1 equivalence classes. [2025-03-03 19:52:47,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 561 of 561 statements. [2025-03-03 19:52:47,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:47,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:47,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-03 19:52:47,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 19:52:48,751 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7702 proven. 306 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2025-03-03 19:52:48,751 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 19:52:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 216 proven. 309 refuted. 0 times theorem prover too weak. 15139 trivial. 0 not checked. [2025-03-03 19:52:52,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545572666] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 19:52:52,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 19:52:52,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 13] total 28 [2025-03-03 19:52:52,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634949822] [2025-03-03 19:52:52,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 19:52:52,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-03 19:52:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:52,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-03 19:52:52,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2025-03-03 19:52:52,046 INFO L87 Difference]: Start difference. First operand 10360 states and 16763 transitions. Second operand has 28 states, 26 states have (on average 11.153846153846153) internal successors, (290), 26 states have internal predecessors, (290), 8 states have call successors, (231), 4 states have call predecessors, (231), 8 states have return successors, (231), 7 states have call predecessors, (231), 8 states have call successors, (231) [2025-03-03 19:53:00,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:53:00,125 INFO L93 Difference]: Finished difference Result 40116 states and 64333 transitions. [2025-03-03 19:53:00,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2025-03-03 19:53:00,125 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 11.153846153846153) internal successors, (290), 26 states have internal predecessors, (290), 8 states have call successors, (231), 4 states have call predecessors, (231), 8 states have return successors, (231), 7 states have call predecessors, (231), 8 states have call successors, (231) Word has length 561 [2025-03-03 19:53:00,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:53:00,205 INFO L225 Difference]: With dead ends: 40116 [2025-03-03 19:53:00,205 INFO L226 Difference]: Without dead ends: 29810 [2025-03-03 19:53:00,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1244 GetRequests, 1118 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5758 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2938, Invalid=13318, Unknown=0, NotChecked=0, Total=16256 [2025-03-03 19:53:00,227 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 4913 mSDsluCounter, 7645 mSDsCounter, 0 mSdLazyCounter, 7023 mSolverCounterSat, 2155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5021 SdHoareTripleChecker+Valid, 8563 SdHoareTripleChecker+Invalid, 9178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2155 IncrementalHoareTripleChecker+Valid, 7023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-03 19:53:00,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5021 Valid, 8563 Invalid, 9178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2155 Valid, 7023 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2025-03-03 19:53:00,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29810 states. [2025-03-03 19:53:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29810 to 17604. [2025-03-03 19:53:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17604 states, 14914 states have (on average 1.587971033927853) internal successors, (23683), 14988 states have internal predecessors, (23683), 2437 states have call successors, (2437), 252 states have call predecessors, (2437), 252 states have return successors, (2437), 2363 states have call predecessors, (2437), 2437 states have call successors, (2437) [2025-03-03 19:53:01,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17604 states to 17604 states and 28557 transitions. [2025-03-03 19:53:01,522 INFO L78 Accepts]: Start accepts. Automaton has 17604 states and 28557 transitions. Word has length 561 [2025-03-03 19:53:01,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:53:01,522 INFO L471 AbstractCegarLoop]: Abstraction has 17604 states and 28557 transitions. [2025-03-03 19:53:01,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 11.153846153846153) internal successors, (290), 26 states have internal predecessors, (290), 8 states have call successors, (231), 4 states have call predecessors, (231), 8 states have return successors, (231), 7 states have call predecessors, (231), 8 states have call successors, (231) [2025-03-03 19:53:01,523 INFO L276 IsEmpty]: Start isEmpty. Operand 17604 states and 28557 transitions. [2025-03-03 19:53:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2025-03-03 19:53:01,531 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:53:01,531 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:53:01,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 19:53:01,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:53:01,732 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:53:01,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:53:01,733 INFO L85 PathProgramCache]: Analyzing trace with hash -968238195, now seen corresponding path program 1 times [2025-03-03 19:53:01,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:53:01,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943826314] [2025-03-03 19:53:01,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:53:01,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:53:01,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 561 statements into 1 equivalence classes. [2025-03-03 19:53:01,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 561 of 561 statements. [2025-03-03 19:53:01,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:53:01,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:53:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 114 proven. 150 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2025-03-03 19:53:02,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:53:02,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943826314] [2025-03-03 19:53:02,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943826314] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 19:53:02,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390814678] [2025-03-03 19:53:02,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:53:02,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:53:02,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:53:02,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 19:53:02,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 19:53:02,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 561 statements into 1 equivalence classes. [2025-03-03 19:53:02,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 561 of 561 statements. [2025-03-03 19:53:02,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:53:02,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:53:02,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 1230 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 19:53:02,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 19:53:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 7764 proven. 150 refuted. 0 times theorem prover too weak. 7750 trivial. 0 not checked. [2025-03-03 19:53:02,851 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 19:53:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 114 proven. 150 refuted. 0 times theorem prover too weak. 15400 trivial. 0 not checked. [2025-03-03 19:53:03,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390814678] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 19:53:03,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 19:53:03,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-03-03 19:53:03,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042179124] [2025-03-03 19:53:03,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 19:53:03,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-03 19:53:03,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:53:03,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-03 19:53:03,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2025-03-03 19:53:03,146 INFO L87 Difference]: Start difference. First operand 17604 states and 28557 transitions. Second operand has 14 states, 14 states have (on average 12.5) internal successors, (175), 14 states have internal predecessors, (175), 3 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 3 states have call predecessors, (190), 3 states have call successors, (190) [2025-03-03 19:53:05,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:53:05,897 INFO L93 Difference]: Finished difference Result 51148 states and 83231 transitions. [2025-03-03 19:53:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-03 19:53:05,898 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.5) internal successors, (175), 14 states have internal predecessors, (175), 3 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 3 states have call predecessors, (190), 3 states have call successors, (190) Word has length 561 [2025-03-03 19:53:05,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:53:05,985 INFO L225 Difference]: With dead ends: 51148 [2025-03-03 19:53:05,985 INFO L226 Difference]: Without dead ends: 33598 [2025-03-03 19:53:06,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1136 GetRequests, 1117 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2025-03-03 19:53:06,017 INFO L435 NwaCegarLoop]: 380 mSDtfsCounter, 1172 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 19:53:06,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 1750 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 19:53:06,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33598 states. [2025-03-03 19:53:07,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33598 to 23640. [2025-03-03 19:53:07,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23640 states, 20366 states have (on average 1.6000687420210153) internal successors, (32587), 20468 states have internal predecessors, (32587), 2985 states have call successors, (2985), 288 states have call predecessors, (2985), 288 states have return successors, (2985), 2883 states have call predecessors, (2985), 2985 states have call successors, (2985) [2025-03-03 19:53:07,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23640 states to 23640 states and 38557 transitions. [2025-03-03 19:53:07,642 INFO L78 Accepts]: Start accepts. Automaton has 23640 states and 38557 transitions. Word has length 561 [2025-03-03 19:53:07,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:53:07,643 INFO L471 AbstractCegarLoop]: Abstraction has 23640 states and 38557 transitions. [2025-03-03 19:53:07,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.5) internal successors, (175), 14 states have internal predecessors, (175), 3 states have call successors, (189), 2 states have call predecessors, (189), 4 states have return successors, (190), 3 states have call predecessors, (190), 3 states have call successors, (190) [2025-03-03 19:53:07,643 INFO L276 IsEmpty]: Start isEmpty. Operand 23640 states and 38557 transitions. [2025-03-03 19:53:07,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2025-03-03 19:53:07,653 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:53:07,653 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:53:07,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 19:53:07,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:53:07,858 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:53:07,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:53:07,858 INFO L85 PathProgramCache]: Analyzing trace with hash -838751798, now seen corresponding path program 1 times [2025-03-03 19:53:07,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:53:07,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495766158] [2025-03-03 19:53:07,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:53:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:53:07,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 561 statements into 1 equivalence classes. [2025-03-03 19:53:07,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 561 of 561 statements. [2025-03-03 19:53:07,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:53:07,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:53:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2025-03-03 19:53:08,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:53:08,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495766158] [2025-03-03 19:53:08,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495766158] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:53:08,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:53:08,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 19:53:08,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194204748] [2025-03-03 19:53:08,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:53:08,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 19:53:08,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:53:08,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 19:53:08,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 19:53:08,013 INFO L87 Difference]: Start difference. First operand 23640 states and 38557 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2025-03-03 19:53:10,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:53:10,156 INFO L93 Difference]: Finished difference Result 54262 states and 88135 transitions. [2025-03-03 19:53:10,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 19:53:10,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 561 [2025-03-03 19:53:10,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:53:10,233 INFO L225 Difference]: With dead ends: 54262 [2025-03-03 19:53:10,233 INFO L226 Difference]: Without dead ends: 30676 [2025-03-03 19:53:10,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 19:53:10,267 INFO L435 NwaCegarLoop]: 436 mSDtfsCounter, 285 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 19:53:10,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 837 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 19:53:10,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30676 states. [2025-03-03 19:53:12,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30676 to 20730. [2025-03-03 19:53:12,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20730 states, 17456 states have (on average 1.5780820348304307) internal successors, (27547), 17558 states have internal predecessors, (27547), 2985 states have call successors, (2985), 288 states have call predecessors, (2985), 288 states have return successors, (2985), 2883 states have call predecessors, (2985), 2985 states have call successors, (2985) [2025-03-03 19:53:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20730 states to 20730 states and 33517 transitions. [2025-03-03 19:53:12,457 INFO L78 Accepts]: Start accepts. Automaton has 20730 states and 33517 transitions. Word has length 561 [2025-03-03 19:53:12,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:53:12,458 INFO L471 AbstractCegarLoop]: Abstraction has 20730 states and 33517 transitions. [2025-03-03 19:53:12,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2025-03-03 19:53:12,458 INFO L276 IsEmpty]: Start isEmpty. Operand 20730 states and 33517 transitions. [2025-03-03 19:53:12,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2025-03-03 19:53:12,466 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:53:12,466 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 19:53:12,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 19:53:12,466 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:53:12,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:53:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1617260053, now seen corresponding path program 1 times [2025-03-03 19:53:12,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:53:12,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619051546] [2025-03-03 19:53:12,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:53:12,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:53:12,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 562 statements into 1 equivalence classes. [2025-03-03 19:53:12,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 562 of 562 statements. [2025-03-03 19:53:12,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:53:12,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:53:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 15664 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15664 trivial. 0 not checked. [2025-03-03 19:53:12,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:53:12,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619051546] [2025-03-03 19:53:12,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619051546] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:53:12,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:53:12,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 19:53:12,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960201540] [2025-03-03 19:53:12,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:53:12,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 19:53:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:53:12,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 19:53:12,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 19:53:12,717 INFO L87 Difference]: Start difference. First operand 20730 states and 33517 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) [2025-03-03 19:53:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:53:14,575 INFO L93 Difference]: Finished difference Result 41544 states and 67177 transitions. [2025-03-03 19:53:14,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 19:53:14,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 1 states have call successors, (89), 1 states have call predecessors, (89), 1 states have return successors, (89), 1 states have call predecessors, (89), 1 states have call successors, (89) Word has length 562 [2025-03-03 19:53:14,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:53:14,632 INFO L225 Difference]: With dead ends: 41544 [2025-03-03 19:53:14,633 INFO L226 Difference]: Without dead ends: 20868 [2025-03-03 19:53:14,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-03 19:53:14,667 INFO L435 NwaCegarLoop]: 787 mSDtfsCounter, 1079 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 19:53:14,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 2854 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 19:53:14,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20868 states.