./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-89.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-89.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 341cfc181a184dfd888895046689be86cf5a3b257f2774b185252ff7e72de492 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 19:52:07,276 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 19:52:07,343 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 19:52:07,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 19:52:07,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 19:52:07,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 19:52:07,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 19:52:07,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 19:52:07,378 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 19:52:07,379 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 19:52:07,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 19:52:07,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 19:52:07,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 19:52:07,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 19:52:07,380 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 19:52:07,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 19:52:07,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 19:52:07,381 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 19:52:07,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 19:52:07,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 19:52:07,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 19:52:07,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 19:52:07,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 19:52:07,381 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 19:52:07,382 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 19:52:07,382 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 19:52:07,382 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 19:52:07,382 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 19:52:07,382 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 19:52:07,382 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 19:52:07,382 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 19:52:07,382 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 19:52:07,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 19:52:07,383 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 19:52:07,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 19:52:07,383 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 19:52:07,383 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 19:52:07,383 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 19:52:07,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 19:52:07,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 19:52:07,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 19:52:07,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 19:52:07,384 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 19:52:07,384 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 -> 341cfc181a184dfd888895046689be86cf5a3b257f2774b185252ff7e72de492 [2025-03-03 19:52:07,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 19:52:07,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 19:52:07,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 19:52:07,643 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 19:52:07,643 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 19:52:07,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-89.i [2025-03-03 19:52:08,837 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd4500e3/adba03b5e45a4082a14c57a9565c23be/FLAG47437c884 [2025-03-03 19:52:09,100 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 19:52:09,101 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-89.i [2025-03-03 19:52:09,109 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd4500e3/adba03b5e45a4082a14c57a9565c23be/FLAG47437c884 [2025-03-03 19:52:09,125 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd4500e3/adba03b5e45a4082a14c57a9565c23be [2025-03-03 19:52:09,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 19:52:09,128 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 19:52:09,129 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 19:52:09,129 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 19:52:09,132 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 19:52:09,133 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 07:52:09" (1/1) ... [2025-03-03 19:52:09,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22cac7e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09, skipping insertion in model container [2025-03-03 19:52:09,134 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 07:52:09" (1/1) ... [2025-03-03 19:52:09,157 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 19:52:09,271 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-89.i[916,929] [2025-03-03 19:52:09,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 19:52:09,383 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 19:52:09,391 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-89.i[916,929] [2025-03-03 19:52:09,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 19:52:09,482 INFO L204 MainTranslator]: Completed translation [2025-03-03 19:52:09,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09 WrapperNode [2025-03-03 19:52:09,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 19:52:09,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 19:52:09,485 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 19:52:09,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 19:52:09,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09" (1/1) ... [2025-03-03 19:52:09,504 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09" (1/1) ... [2025-03-03 19:52:09,551 INFO L138 Inliner]: procedures = 26, calls = 74, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 457 [2025-03-03 19:52:09,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 19:52:09,552 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 19:52:09,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 19:52:09,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 19:52:09,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09" (1/1) ... [2025-03-03 19:52:09,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09" (1/1) ... [2025-03-03 19:52:09,574 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09" (1/1) ... [2025-03-03 19:52:09,597 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 19:52:09,597 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09" (1/1) ... [2025-03-03 19:52:09,597 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09" (1/1) ... [2025-03-03 19:52:09,609 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09" (1/1) ... [2025-03-03 19:52:09,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09" (1/1) ... [2025-03-03 19:52:09,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09" (1/1) ... [2025-03-03 19:52:09,614 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09" (1/1) ... [2025-03-03 19:52:09,619 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 19:52:09,620 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 19:52:09,622 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 19:52:09,622 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 19:52:09,623 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09" (1/1) ... [2025-03-03 19:52:09,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 19:52:09,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:52:09,652 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 19:52:09,655 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 19:52:09,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 19:52:09,674 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 19:52:09,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 19:52:09,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 19:52:09,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 19:52:09,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 19:52:09,757 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 19:52:09,758 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 19:52:10,410 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-03-03 19:52:10,411 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 19:52:10,429 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 19:52:10,430 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 19:52:10,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 07:52:10 BoogieIcfgContainer [2025-03-03 19:52:10,430 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 19:52:10,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 19:52:10,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 19:52:10,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 19:52:10,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 07:52:09" (1/3) ... [2025-03-03 19:52:10,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b607e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 07:52:10, skipping insertion in model container [2025-03-03 19:52:10,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 07:52:09" (2/3) ... [2025-03-03 19:52:10,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b607e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 07:52:10, skipping insertion in model container [2025-03-03 19:52:10,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 07:52:10" (3/3) ... [2025-03-03 19:52:10,437 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-89.i [2025-03-03 19:52:10,447 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 19:52:10,450 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-89.i that has 2 procedures, 195 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 19:52:10,502 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 19:52:10,510 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;@5de7bb0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 19:52:10,510 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 19:52:10,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 195 states, 131 states have (on average 1.5725190839694656) internal successors, (206), 132 states have internal predecessors, (206), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2025-03-03 19:52:10,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2025-03-03 19:52:10,529 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:10,530 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:10,530 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:10,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:10,534 INFO L85 PathProgramCache]: Analyzing trace with hash -332681085, now seen corresponding path program 1 times [2025-03-03 19:52:10,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:10,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530459208] [2025-03-03 19:52:10,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:10,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:10,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 390 statements into 1 equivalence classes. [2025-03-03 19:52:10,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 390 of 390 statements. [2025-03-03 19:52:10,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:10,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:11,178 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-03 19:52:11,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:11,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530459208] [2025-03-03 19:52:11,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530459208] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:52:11,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:52:11,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 19:52:11,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704592048] [2025-03-03 19:52:11,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:52:11,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 19:52:11,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:11,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 19:52:11,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 19:52:11,209 INFO L87 Difference]: Start difference. First operand has 195 states, 131 states have (on average 1.5725190839694656) internal successors, (206), 132 states have internal predecessors, (206), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-03-03 19:52:11,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:11,320 INFO L93 Difference]: Finished difference Result 497 states and 930 transitions. [2025-03-03 19:52:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 19:52:11,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 390 [2025-03-03 19:52:11,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:11,331 INFO L225 Difference]: With dead ends: 497 [2025-03-03 19:52:11,331 INFO L226 Difference]: Without dead ends: 305 [2025-03-03 19:52:11,335 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 19:52:11,337 INFO L435 NwaCegarLoop]: 347 mSDtfsCounter, 166 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:11,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 643 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 19:52:11,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2025-03-03 19:52:11,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 302. [2025-03-03 19:52:11,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 216 states have (on average 1.5833333333333333) internal successors, (342), 217 states have internal predecessors, (342), 83 states have call successors, (83), 2 states have call predecessors, (83), 2 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2025-03-03 19:52:11,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 508 transitions. [2025-03-03 19:52:11,439 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 508 transitions. Word has length 390 [2025-03-03 19:52:11,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:11,441 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 508 transitions. [2025-03-03 19:52:11,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-03-03 19:52:11,441 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 508 transitions. [2025-03-03 19:52:11,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2025-03-03 19:52:11,451 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:11,451 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:11,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 19:52:11,452 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:11,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:11,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1516091747, now seen corresponding path program 1 times [2025-03-03 19:52:11,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:11,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822234605] [2025-03-03 19:52:11,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:11,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:11,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 390 statements into 1 equivalence classes. [2025-03-03 19:52:11,544 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 390 of 390 statements. [2025-03-03 19:52:11,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:11,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-03 19:52:11,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:11,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822234605] [2025-03-03 19:52:11,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822234605] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:52:11,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:52:11,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 19:52:11,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549928381] [2025-03-03 19:52:11,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:52:11,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 19:52:11,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:11,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 19:52:11,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 19:52:11,840 INFO L87 Difference]: Start difference. First operand 302 states and 508 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-03-03 19:52:12,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:12,124 INFO L93 Difference]: Finished difference Result 1095 states and 1850 transitions. [2025-03-03 19:52:12,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 19:52:12,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 390 [2025-03-03 19:52:12,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:12,137 INFO L225 Difference]: With dead ends: 1095 [2025-03-03 19:52:12,139 INFO L226 Difference]: Without dead ends: 796 [2025-03-03 19:52:12,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 19:52:12,142 INFO L435 NwaCegarLoop]: 558 mSDtfsCounter, 382 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:12,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 976 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 19:52:12,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2025-03-03 19:52:12,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 789. [2025-03-03 19:52:12,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 592 states have (on average 1.6064189189189189) internal successors, (951), 596 states have internal predecessors, (951), 190 states have call successors, (190), 6 states have call predecessors, (190), 6 states have return successors, (190), 186 states have call predecessors, (190), 190 states have call successors, (190) [2025-03-03 19:52:12,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1331 transitions. [2025-03-03 19:52:12,257 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1331 transitions. Word has length 390 [2025-03-03 19:52:12,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:12,258 INFO L471 AbstractCegarLoop]: Abstraction has 789 states and 1331 transitions. [2025-03-03 19:52:12,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-03-03 19:52:12,258 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1331 transitions. [2025-03-03 19:52:12,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2025-03-03 19:52:12,263 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:12,264 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:12,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 19:52:12,264 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:12,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:12,265 INFO L85 PathProgramCache]: Analyzing trace with hash -188743466, now seen corresponding path program 1 times [2025-03-03 19:52:12,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:12,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660269462] [2025-03-03 19:52:12,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:12,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:12,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 391 statements into 1 equivalence classes. [2025-03-03 19:52:12,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 391 of 391 statements. [2025-03-03 19:52:12,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:12,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-03 19:52:12,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:12,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660269462] [2025-03-03 19:52:12,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660269462] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:52:12,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:52:12,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 19:52:12,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987672810] [2025-03-03 19:52:12,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:52:12,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 19:52:12,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:12,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 19:52:12,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 19:52:12,639 INFO L87 Difference]: Start difference. First operand 789 states and 1331 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-03-03 19:52:12,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:12,728 INFO L93 Difference]: Finished difference Result 2361 states and 3987 transitions. [2025-03-03 19:52:12,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 19:52:12,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 391 [2025-03-03 19:52:12,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:12,743 INFO L225 Difference]: With dead ends: 2361 [2025-03-03 19:52:12,743 INFO L226 Difference]: Without dead ends: 1575 [2025-03-03 19:52:12,746 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 19:52:12,747 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 307 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:12,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 832 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 19:52:12,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2025-03-03 19:52:12,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1573. [2025-03-03 19:52:12,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1180 states have (on average 1.6033898305084746) internal successors, (1892), 1188 states have internal predecessors, (1892), 380 states have call successors, (380), 12 states have call predecessors, (380), 12 states have return successors, (380), 372 states have call predecessors, (380), 380 states have call successors, (380) [2025-03-03 19:52:12,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2652 transitions. [2025-03-03 19:52:12,931 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2652 transitions. Word has length 391 [2025-03-03 19:52:12,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:12,932 INFO L471 AbstractCegarLoop]: Abstraction has 1573 states and 2652 transitions. [2025-03-03 19:52:12,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-03-03 19:52:12,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2652 transitions. [2025-03-03 19:52:12,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2025-03-03 19:52:12,937 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:12,938 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:12,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 19:52:12,938 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:12,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:12,938 INFO L85 PathProgramCache]: Analyzing trace with hash 599788091, now seen corresponding path program 1 times [2025-03-03 19:52:12,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:12,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249736466] [2025-03-03 19:52:12,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:12,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:12,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 392 statements into 1 equivalence classes. [2025-03-03 19:52:13,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 392 of 392 statements. [2025-03-03 19:52:13,014 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:13,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-03 19:52:13,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:13,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249736466] [2025-03-03 19:52:13,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249736466] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:52:13,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:52:13,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 19:52:13,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64391870] [2025-03-03 19:52:13,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:52:13,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 19:52:13,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:13,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 19:52:13,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 19:52:13,276 INFO L87 Difference]: Start difference. First operand 1573 states and 2652 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-03-03 19:52:13,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:13,413 INFO L93 Difference]: Finished difference Result 4701 states and 7926 transitions. [2025-03-03 19:52:13,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 19:52:13,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 392 [2025-03-03 19:52:13,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:13,431 INFO L225 Difference]: With dead ends: 4701 [2025-03-03 19:52:13,431 INFO L226 Difference]: Without dead ends: 3131 [2025-03-03 19:52:13,437 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 19:52:13,438 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 172 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:13,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 617 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 19:52:13,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2025-03-03 19:52:13,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3105. [2025-03-03 19:52:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3105 states, 2320 states have (on average 1.5827586206896551) internal successors, (3672), 2336 states have internal predecessors, (3672), 760 states have call successors, (760), 24 states have call predecessors, (760), 24 states have return successors, (760), 744 states have call predecessors, (760), 760 states have call successors, (760) [2025-03-03 19:52:13,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 5192 transitions. [2025-03-03 19:52:13,649 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 5192 transitions. Word has length 392 [2025-03-03 19:52:13,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:13,650 INFO L471 AbstractCegarLoop]: Abstraction has 3105 states and 5192 transitions. [2025-03-03 19:52:13,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-03-03 19:52:13,650 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 5192 transitions. [2025-03-03 19:52:13,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2025-03-03 19:52:13,656 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:13,657 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:13,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 19:52:13,657 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:13,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:13,658 INFO L85 PathProgramCache]: Analyzing trace with hash 631187805, now seen corresponding path program 1 times [2025-03-03 19:52:13,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:13,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266475184] [2025-03-03 19:52:13,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:13,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:13,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 392 statements into 1 equivalence classes. [2025-03-03 19:52:13,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 392 of 392 statements. [2025-03-03 19:52:13,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:13,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-03 19:52:14,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:14,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266475184] [2025-03-03 19:52:14,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266475184] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:52:14,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:52:14,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 19:52:14,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763688684] [2025-03-03 19:52:14,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:52:14,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 19:52:14,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:14,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 19:52:14,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 19:52:14,050 INFO L87 Difference]: Start difference. First operand 3105 states and 5192 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-03-03 19:52:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:14,320 INFO L93 Difference]: Finished difference Result 7501 states and 12582 transitions. [2025-03-03 19:52:14,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 19:52:14,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 392 [2025-03-03 19:52:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:14,354 INFO L225 Difference]: With dead ends: 7501 [2025-03-03 19:52:14,355 INFO L226 Difference]: Without dead ends: 5559 [2025-03-03 19:52:14,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 19:52:14,363 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 197 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:14,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1416 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 19:52:14,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5559 states. [2025-03-03 19:52:14,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5559 to 5541. [2025-03-03 19:52:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5541 states, 4380 states have (on average 1.6136986301369862) internal successors, (7068), 4420 states have internal predecessors, (7068), 1112 states have call successors, (1112), 48 states have call predecessors, (1112), 48 states have return successors, (1112), 1072 states have call predecessors, (1112), 1112 states have call successors, (1112) [2025-03-03 19:52:14,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 9292 transitions. [2025-03-03 19:52:14,639 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 9292 transitions. Word has length 392 [2025-03-03 19:52:14,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:14,640 INFO L471 AbstractCegarLoop]: Abstraction has 5541 states and 9292 transitions. [2025-03-03 19:52:14,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-03-03 19:52:14,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 9292 transitions. [2025-03-03 19:52:14,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2025-03-03 19:52:14,646 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:14,646 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:14,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 19:52:14,647 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:14,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:14,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1692840034, now seen corresponding path program 1 times [2025-03-03 19:52:14,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:14,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035249203] [2025-03-03 19:52:14,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:14,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:14,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 392 statements into 1 equivalence classes. [2025-03-03 19:52:14,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 392 of 392 statements. [2025-03-03 19:52:14,882 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:14,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-03 19:52:15,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:15,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035249203] [2025-03-03 19:52:15,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035249203] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:52:15,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:52:15,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 19:52:15,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138032924] [2025-03-03 19:52:15,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:52:15,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 19:52:15,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:15,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 19:52:15,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 19:52:15,288 INFO L87 Difference]: Start difference. First operand 5541 states and 9292 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2025-03-03 19:52:15,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:15,907 INFO L93 Difference]: Finished difference Result 14218 states and 23830 transitions. [2025-03-03 19:52:15,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 19:52:15,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 392 [2025-03-03 19:52:15,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:15,961 INFO L225 Difference]: With dead ends: 14218 [2025-03-03 19:52:15,961 INFO L226 Difference]: Without dead ends: 8680 [2025-03-03 19:52:15,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 19:52:15,987 INFO L435 NwaCegarLoop]: 439 mSDtfsCounter, 422 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:15,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 725 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 19:52:15,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8680 states. [2025-03-03 19:52:16,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8680 to 8678. [2025-03-03 19:52:16,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8678 states, 6716 states have (on average 1.5991661703394877) internal successors, (10740), 6773 states have internal predecessors, (10740), 1888 states have call successors, (1888), 73 states have call predecessors, (1888), 73 states have return successors, (1888), 1831 states have call predecessors, (1888), 1888 states have call successors, (1888) [2025-03-03 19:52:16,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8678 states to 8678 states and 14516 transitions. [2025-03-03 19:52:16,485 INFO L78 Accepts]: Start accepts. Automaton has 8678 states and 14516 transitions. Word has length 392 [2025-03-03 19:52:16,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:16,485 INFO L471 AbstractCegarLoop]: Abstraction has 8678 states and 14516 transitions. [2025-03-03 19:52:16,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2025-03-03 19:52:16,486 INFO L276 IsEmpty]: Start isEmpty. Operand 8678 states and 14516 transitions. [2025-03-03 19:52:16,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2025-03-03 19:52:16,493 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:16,493 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:16,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 19:52:16,494 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:16,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:16,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1615373185, now seen corresponding path program 1 times [2025-03-03 19:52:16,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:16,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717400842] [2025-03-03 19:52:16,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:16,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:16,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 393 statements into 1 equivalence classes. [2025-03-03 19:52:16,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 393 of 393 statements. [2025-03-03 19:52:16,532 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:16,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-03 19:52:16,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:16,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717400842] [2025-03-03 19:52:16,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717400842] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 19:52:16,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 19:52:16,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 19:52:16,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548843404] [2025-03-03 19:52:16,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 19:52:16,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 19:52:16,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:16,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 19:52:16,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 19:52:16,599 INFO L87 Difference]: Start difference. First operand 8678 states and 14516 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-03-03 19:52:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:17,170 INFO L93 Difference]: Finished difference Result 23802 states and 39829 transitions. [2025-03-03 19:52:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 19:52:17,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 393 [2025-03-03 19:52:17,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:17,237 INFO L225 Difference]: With dead ends: 23802 [2025-03-03 19:52:17,237 INFO L226 Difference]: Without dead ends: 15156 [2025-03-03 19:52:17,257 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 19:52:17,258 INFO L435 NwaCegarLoop]: 432 mSDtfsCounter, 184 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:17,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 714 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 19:52:17,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15156 states. [2025-03-03 19:52:17,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15156 to 15106. [2025-03-03 19:52:17,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15106 states, 12111 states have (on average 1.6136570060275783) internal successors, (19543), 12240 states have internal predecessors, (19543), 2848 states have call successors, (2848), 146 states have call predecessors, (2848), 146 states have return successors, (2848), 2719 states have call predecessors, (2848), 2848 states have call successors, (2848) [2025-03-03 19:52:18,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15106 states to 15106 states and 25239 transitions. [2025-03-03 19:52:18,062 INFO L78 Accepts]: Start accepts. Automaton has 15106 states and 25239 transitions. Word has length 393 [2025-03-03 19:52:18,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:18,063 INFO L471 AbstractCegarLoop]: Abstraction has 15106 states and 25239 transitions. [2025-03-03 19:52:18,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2025-03-03 19:52:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand 15106 states and 25239 transitions. [2025-03-03 19:52:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2025-03-03 19:52:18,077 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:18,077 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:18,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 19:52:18,078 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:18,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:18,079 INFO L85 PathProgramCache]: Analyzing trace with hash -988966375, now seen corresponding path program 1 times [2025-03-03 19:52:18,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:18,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601567291] [2025-03-03 19:52:18,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:18,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:18,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 393 statements into 1 equivalence classes. [2025-03-03 19:52:18,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 393 of 393 statements. [2025-03-03 19:52:18,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:18,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 114 proven. 66 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2025-03-03 19:52:18,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:18,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601567291] [2025-03-03 19:52:18,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601567291] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 19:52:18,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443908207] [2025-03-03 19:52:18,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:18,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:52:18,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:52:18,443 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 19:52:18,444 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 19:52:18,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 393 statements into 1 equivalence classes. [2025-03-03 19:52:18,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 393 of 393 statements. [2025-03-03 19:52:18,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:18,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:18,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 19:52:18,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 19:52:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3708 proven. 84 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2025-03-03 19:52:19,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 19:52:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 96 proven. 84 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2025-03-03 19:52:20,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443908207] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 19:52:20,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 19:52:20,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2025-03-03 19:52:20,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679471470] [2025-03-03 19:52:20,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 19:52:20,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-03 19:52:20,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:20,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-03 19:52:20,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2025-03-03 19:52:20,067 INFO L87 Difference]: Start difference. First operand 15106 states and 25239 transitions. Second operand has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 5 states have call successors, (150), 3 states have call predecessors, (150), 6 states have return successors, (151), 5 states have call predecessors, (151), 5 states have call successors, (151) [2025-03-03 19:52:21,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:21,999 INFO L93 Difference]: Finished difference Result 38643 states and 63114 transitions. [2025-03-03 19:52:21,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-03 19:52:22,000 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 5 states have call successors, (150), 3 states have call predecessors, (150), 6 states have return successors, (151), 5 states have call predecessors, (151), 5 states have call successors, (151) Word has length 393 [2025-03-03 19:52:22,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:22,084 INFO L225 Difference]: With dead ends: 38643 [2025-03-03 19:52:22,084 INFO L226 Difference]: Without dead ends: 23573 [2025-03-03 19:52:22,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 779 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=516, Unknown=0, NotChecked=0, Total=756 [2025-03-03 19:52:22,130 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 1278 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:22,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 926 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-03 19:52:22,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23573 states. [2025-03-03 19:52:23,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23573 to 22956. [2025-03-03 19:52:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22956 states, 17617 states have (on average 1.500425725151842) internal successors, (26433), 17890 states have internal predecessors, (26433), 5014 states have call successors, (5014), 324 states have call predecessors, (5014), 324 states have return successors, (5014), 4741 states have call predecessors, (5014), 5014 states have call successors, (5014) [2025-03-03 19:52:23,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22956 states to 22956 states and 36461 transitions. [2025-03-03 19:52:23,543 INFO L78 Accepts]: Start accepts. Automaton has 22956 states and 36461 transitions. Word has length 393 [2025-03-03 19:52:23,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:23,544 INFO L471 AbstractCegarLoop]: Abstraction has 22956 states and 36461 transitions. [2025-03-03 19:52:23,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.857142857142858) internal successors, (222), 14 states have internal predecessors, (222), 5 states have call successors, (150), 3 states have call predecessors, (150), 6 states have return successors, (151), 5 states have call predecessors, (151), 5 states have call successors, (151) [2025-03-03 19:52:23,544 INFO L276 IsEmpty]: Start isEmpty. Operand 22956 states and 36461 transitions. [2025-03-03 19:52:23,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2025-03-03 19:52:23,558 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:23,558 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:23,566 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 19:52:23,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:52:23,759 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:23,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:23,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1800139194, now seen corresponding path program 1 times [2025-03-03 19:52:23,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:23,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395753808] [2025-03-03 19:52:23,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:23,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:23,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 395 statements into 1 equivalence classes. [2025-03-03 19:52:23,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 395 of 395 statements. [2025-03-03 19:52:23,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:23,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 19:52:23,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119327284] [2025-03-03 19:52:23,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:23,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:52:23,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:52:23,931 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 19:52:23,932 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 19:52:24,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 395 statements into 1 equivalence classes. [2025-03-03 19:52:24,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 395 of 395 statements. [2025-03-03 19:52:24,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:24,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:24,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 19:52:24,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 19:52:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3720 proven. 90 refuted. 0 times theorem prover too weak. 3510 trivial. 0 not checked. [2025-03-03 19:52:24,458 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 19:52:24,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 19:52:24,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395753808] [2025-03-03 19:52:24,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 19:52:24,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119327284] [2025-03-03 19:52:24,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119327284] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 19:52:24,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-03 19:52:24,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2025-03-03 19:52:24,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100898674] [2025-03-03 19:52:24,678 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-03 19:52:24,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 19:52:24,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 19:52:24,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 19:52:24,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-03 19:52:24,680 INFO L87 Difference]: Start difference. First operand 22956 states and 36461 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2025-03-03 19:52:26,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 19:52:26,936 INFO L93 Difference]: Finished difference Result 64990 states and 101848 transitions. [2025-03-03 19:52:26,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 19:52:26,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 395 [2025-03-03 19:52:26,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 19:52:27,117 INFO L225 Difference]: With dead ends: 64990 [2025-03-03 19:52:27,117 INFO L226 Difference]: Without dead ends: 42112 [2025-03-03 19:52:27,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2025-03-03 19:52:27,177 INFO L435 NwaCegarLoop]: 285 mSDtfsCounter, 387 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 19:52:27,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 845 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 19:52:27,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42112 states. [2025-03-03 19:52:29,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42112 to 40936. [2025-03-03 19:52:29,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40936 states, 30812 states have (on average 1.466960924315202) internal successors, (45200), 31373 states have internal predecessors, (45200), 9494 states have call successors, (9494), 629 states have call predecessors, (9494), 629 states have return successors, (9494), 8933 states have call predecessors, (9494), 9494 states have call successors, (9494) [2025-03-03 19:52:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40936 states to 40936 states and 64188 transitions. [2025-03-03 19:52:29,651 INFO L78 Accepts]: Start accepts. Automaton has 40936 states and 64188 transitions. Word has length 395 [2025-03-03 19:52:29,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 19:52:29,652 INFO L471 AbstractCegarLoop]: Abstraction has 40936 states and 64188 transitions. [2025-03-03 19:52:29,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 2 states have call successors, (61), 2 states have call predecessors, (61), 3 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2025-03-03 19:52:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 40936 states and 64188 transitions. [2025-03-03 19:52:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2025-03-03 19:52:29,671 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 19:52:29,671 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:29,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 19:52:29,871 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,SelfDestructingSolverStorable8 [2025-03-03 19:52:29,872 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 19:52:29,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 19:52:29,872 INFO L85 PathProgramCache]: Analyzing trace with hash -209964647, now seen corresponding path program 1 times [2025-03-03 19:52:29,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 19:52:29,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181109885] [2025-03-03 19:52:29,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:29,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 19:52:29,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 395 statements into 1 equivalence classes. [2025-03-03 19:52:30,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 395 of 395 statements. [2025-03-03 19:52:30,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:30,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 19:52:30,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [830354190] [2025-03-03 19:52:30,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 19:52:30,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 19:52:30,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 19:52:30,052 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 19:52:30,053 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 19:52:30,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 395 statements into 1 equivalence classes. [2025-03-03 19:52:30,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 395 of 395 statements. [2025-03-03 19:52:30,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 19:52:30,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 19:52:30,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-03-03 19:52:30,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 19:52:39,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 5143 proven. 567 refuted. 0 times theorem prover too weak. 1610 trivial. 0 not checked. [2025-03-03 19:52:39,839 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 19:53:21,306 WARN L286 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-03-03 19:53:31,353 WARN L286 SmtUtils]: Spent 6.65s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)