./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 e2fb8bed 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-?-e2fb8be-m [2025-03-08 11:03:23,209 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 11:03:23,268 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 11:03:23,273 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 11:03:23,273 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 11:03:23,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 11:03:23,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 11:03:23,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 11:03:23,291 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 11:03:23,291 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 11:03:23,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 11:03:23,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 11:03:23,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 11:03:23,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 11:03:23,291 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 11:03:23,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 11:03:23,292 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 11:03:23,292 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 11:03:23,292 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 11:03:23,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 11:03:23,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 11:03:23,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 11:03:23,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 11:03:23,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 11:03:23,292 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 11:03:23,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 11:03:23,292 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 11:03:23,293 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 11:03:23,293 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 11:03:23,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 11:03:23,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 11:03:23,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 11:03:23,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 11:03:23,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 11:03:23,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 11:03:23,293 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 11:03:23,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 11:03:23,293 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 11:03:23,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 11:03:23,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 11:03:23,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 11:03:23,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 11:03:23,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 11:03:23,294 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 [2025-03-08 11:03:23,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 11:03:23,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 11:03:23,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 11:03:23,542 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 11:03:23,542 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 11:03:23,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-89.i [2025-03-08 11:03:24,660 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f517f51/a834f7a130e044a0b8d55a0e550189ae/FLAG482aecd13 [2025-03-08 11:03:24,923 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 11:03:24,932 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-89.i [2025-03-08 11:03:24,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f517f51/a834f7a130e044a0b8d55a0e550189ae/FLAG482aecd13 [2025-03-08 11:03:25,227 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4f517f51/a834f7a130e044a0b8d55a0e550189ae [2025-03-08 11:03:25,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 11:03:25,230 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 11:03:25,231 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 11:03:25,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 11:03:25,234 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 11:03:25,235 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 11:03:25" (1/1) ... [2025-03-08 11:03:25,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be0aefe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25, skipping insertion in model container [2025-03-08 11:03:25,236 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 11:03:25" (1/1) ... [2025-03-08 11:03:25,253 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 11:03:25,360 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] [2025-03-08 11:03:25,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 11:03:25,499 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 11:03:25,509 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] [2025-03-08 11:03:25,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 11:03:25,588 INFO L204 MainTranslator]: Completed translation [2025-03-08 11:03:25,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25 WrapperNode [2025-03-08 11:03:25,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 11:03:25,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 11:03:25,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 11:03:25,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 11:03:25,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25" (1/1) ... [2025-03-08 11:03:25,605 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25" (1/1) ... [2025-03-08 11:03:25,655 INFO L138 Inliner]: procedures = 26, calls = 74, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 457 [2025-03-08 11:03:25,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 11:03:25,656 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 11:03:25,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 11:03:25,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 11:03:25,663 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25" (1/1) ... [2025-03-08 11:03:25,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25" (1/1) ... [2025-03-08 11:03:25,668 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25" (1/1) ... [2025-03-08 11:03:25,700 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]. [2025-03-08 11:03:25,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25" (1/1) ... [2025-03-08 11:03:25,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25" (1/1) ... [2025-03-08 11:03:25,716 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25" (1/1) ... [2025-03-08 11:03:25,719 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25" (1/1) ... [2025-03-08 11:03:25,723 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25" (1/1) ... [2025-03-08 11:03:25,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25" (1/1) ... [2025-03-08 11:03:25,731 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 11:03:25,735 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 11:03:25,736 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 11:03:25,736 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 11:03:25,737 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25" (1/1) ... [2025-03-08 11:03:25,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 11:03:25,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:03:25,762 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) [2025-03-08 11:03:25,768 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 [2025-03-08 11:03:25,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 11:03:25,783 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 11:03:25,783 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 11:03:25,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 11:03:25,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 11:03:25,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 11:03:25,871 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 11:03:25,872 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 11:03:26,454 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-03-08 11:03:26,454 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 11:03:26,472 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 11:03:26,472 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 11:03:26,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 11:03:26 BoogieIcfgContainer [2025-03-08 11:03:26,473 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 11:03:26,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 11:03:26,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 11:03:26,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 11:03:26,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 11:03:25" (1/3) ... [2025-03-08 11:03:26,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4446a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 11:03:26, skipping insertion in model container [2025-03-08 11:03:26,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:03:25" (2/3) ... [2025-03-08 11:03:26,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4446a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 11:03:26, skipping insertion in model container [2025-03-08 11:03:26,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 11:03:26" (3/3) ... [2025-03-08 11:03:26,480 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-89.i [2025-03-08 11:03:26,491 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 11:03:26,493 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. [2025-03-08 11:03:26,540 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 11:03:26,547 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;@1a2b22c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 11:03:26,547 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 11:03:26,550 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) [2025-03-08 11:03:26,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2025-03-08 11:03:26,569 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:03:26,571 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] [2025-03-08 11:03:26,571 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:03:26,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:03:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash -332681085, now seen corresponding path program 1 times [2025-03-08 11:03:26,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:03:26,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727968587] [2025-03-08 11:03:26,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:03:26,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:03:26,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 390 statements into 1 equivalence classes. [2025-03-08 11:03:26,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 390 of 390 statements. [2025-03-08 11:03:26,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:03:26,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:03:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-08 11:03:27,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:03:27,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727968587] [2025-03-08 11:03:27,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727968587] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:03:27,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:03:27,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 11:03:27,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355947796] [2025-03-08 11:03:27,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:03:27,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 11:03:27,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:03:27,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 11:03:27,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 11:03:27,274 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) [2025-03-08 11:03:27,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:03:27,371 INFO L93 Difference]: Finished difference Result 497 states and 930 transitions. [2025-03-08 11:03:27,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 11:03:27,373 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 [2025-03-08 11:03:27,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:03:27,384 INFO L225 Difference]: With dead ends: 497 [2025-03-08 11:03:27,384 INFO L226 Difference]: Without dead ends: 305 [2025-03-08 11:03:27,389 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 [2025-03-08 11:03:27,394 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 [2025-03-08 11:03:27,394 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] [2025-03-08 11:03:27,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2025-03-08 11:03:27,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 302. [2025-03-08 11:03:27,456 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) [2025-03-08 11:03:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 508 transitions. [2025-03-08 11:03:27,467 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 508 transitions. Word has length 390 [2025-03-08 11:03:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:03:27,470 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 508 transitions. [2025-03-08 11:03:27,471 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) [2025-03-08 11:03:27,471 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 508 transitions. [2025-03-08 11:03:27,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2025-03-08 11:03:27,480 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:03:27,480 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] [2025-03-08 11:03:27,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 11:03:27,480 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:03:27,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:03:27,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1516091747, now seen corresponding path program 1 times [2025-03-08 11:03:27,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:03:27,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684825120] [2025-03-08 11:03:27,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:03:27,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:03:27,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 390 statements into 1 equivalence classes. [2025-03-08 11:03:27,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 390 of 390 statements. [2025-03-08 11:03:27,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:03:27,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:03:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-08 11:03:27,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:03:27,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684825120] [2025-03-08 11:03:27,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684825120] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:03:27,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:03:27,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 11:03:27,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138530988] [2025-03-08 11:03:27,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:03:27,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 11:03:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:03:27,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 11:03:27,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 11:03:27,899 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) [2025-03-08 11:03:28,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:03:28,167 INFO L93 Difference]: Finished difference Result 1095 states and 1850 transitions. [2025-03-08 11:03:28,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 11:03:28,168 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 [2025-03-08 11:03:28,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:03:28,180 INFO L225 Difference]: With dead ends: 1095 [2025-03-08 11:03:28,180 INFO L226 Difference]: Without dead ends: 796 [2025-03-08 11:03:28,183 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 [2025-03-08 11:03:28,184 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 [2025-03-08 11:03:28,184 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] [2025-03-08 11:03:28,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2025-03-08 11:03:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 789. [2025-03-08 11:03:28,297 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) [2025-03-08 11:03:28,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1331 transitions. [2025-03-08 11:03:28,308 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1331 transitions. Word has length 390 [2025-03-08 11:03:28,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:03:28,309 INFO L471 AbstractCegarLoop]: Abstraction has 789 states and 1331 transitions. [2025-03-08 11:03:28,310 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) [2025-03-08 11:03:28,310 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1331 transitions. [2025-03-08 11:03:28,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2025-03-08 11:03:28,317 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:03:28,317 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] [2025-03-08 11:03:28,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 11:03:28,318 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:03:28,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:03:28,320 INFO L85 PathProgramCache]: Analyzing trace with hash -188743466, now seen corresponding path program 1 times [2025-03-08 11:03:28,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:03:28,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623353197] [2025-03-08 11:03:28,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:03:28,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:03:28,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 391 statements into 1 equivalence classes. [2025-03-08 11:03:28,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 391 of 391 statements. [2025-03-08 11:03:28,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:03:28,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:03:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-08 11:03:28,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:03:28,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623353197] [2025-03-08 11:03:28,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623353197] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:03:28,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:03:28,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 11:03:28,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915508903] [2025-03-08 11:03:28,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:03:28,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 11:03:28,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:03:28,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 11:03:28,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 11:03:28,766 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) [2025-03-08 11:03:28,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:03:28,877 INFO L93 Difference]: Finished difference Result 2361 states and 3987 transitions. [2025-03-08 11:03:28,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 11:03:28,878 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 [2025-03-08 11:03:28,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:03:28,891 INFO L225 Difference]: With dead ends: 2361 [2025-03-08 11:03:28,894 INFO L226 Difference]: Without dead ends: 1575 [2025-03-08 11:03:28,897 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 [2025-03-08 11:03:28,899 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 [2025-03-08 11:03:28,900 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] [2025-03-08 11:03:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2025-03-08 11:03:29,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1573. [2025-03-08 11:03:29,073 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) [2025-03-08 11:03:29,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2652 transitions. [2025-03-08 11:03:29,081 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2652 transitions. Word has length 391 [2025-03-08 11:03:29,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:03:29,082 INFO L471 AbstractCegarLoop]: Abstraction has 1573 states and 2652 transitions. [2025-03-08 11:03:29,082 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) [2025-03-08 11:03:29,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2652 transitions. [2025-03-08 11:03:29,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2025-03-08 11:03:29,090 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:03:29,090 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] [2025-03-08 11:03:29,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 11:03:29,091 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:03:29,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:03:29,091 INFO L85 PathProgramCache]: Analyzing trace with hash 599788091, now seen corresponding path program 1 times [2025-03-08 11:03:29,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:03:29,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847045159] [2025-03-08 11:03:29,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:03:29,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:03:29,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 392 statements into 1 equivalence classes. [2025-03-08 11:03:29,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 392 of 392 statements. [2025-03-08 11:03:29,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:03:29,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:03:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-08 11:03:29,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:03:29,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847045159] [2025-03-08 11:03:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847045159] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:03:29,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:03:29,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 11:03:29,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276808111] [2025-03-08 11:03:29,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:03:29,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 11:03:29,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:03:29,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 11:03:29,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 11:03:29,440 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) [2025-03-08 11:03:29,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:03:29,598 INFO L93 Difference]: Finished difference Result 4701 states and 7926 transitions. [2025-03-08 11:03:29,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 11:03:29,599 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 [2025-03-08 11:03:29,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:03:29,615 INFO L225 Difference]: With dead ends: 4701 [2025-03-08 11:03:29,615 INFO L226 Difference]: Without dead ends: 3131 [2025-03-08 11:03:29,622 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 [2025-03-08 11:03:29,623 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 [2025-03-08 11:03:29,623 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] [2025-03-08 11:03:29,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2025-03-08 11:03:29,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3105. [2025-03-08 11:03:29,786 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) [2025-03-08 11:03:29,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3105 states to 3105 states and 5192 transitions. [2025-03-08 11:03:29,804 INFO L78 Accepts]: Start accepts. Automaton has 3105 states and 5192 transitions. Word has length 392 [2025-03-08 11:03:29,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:03:29,805 INFO L471 AbstractCegarLoop]: Abstraction has 3105 states and 5192 transitions. [2025-03-08 11:03:29,806 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) [2025-03-08 11:03:29,806 INFO L276 IsEmpty]: Start isEmpty. Operand 3105 states and 5192 transitions. [2025-03-08 11:03:29,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2025-03-08 11:03:29,810 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:03:29,810 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] [2025-03-08 11:03:29,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 11:03:29,811 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:03:29,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:03:29,811 INFO L85 PathProgramCache]: Analyzing trace with hash 631187805, now seen corresponding path program 1 times [2025-03-08 11:03:29,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:03:29,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293626449] [2025-03-08 11:03:29,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:03:29,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:03:29,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 392 statements into 1 equivalence classes. [2025-03-08 11:03:29,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 392 of 392 statements. [2025-03-08 11:03:29,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:03:29,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:03:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-08 11:03:30,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:03:30,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293626449] [2025-03-08 11:03:30,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293626449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:03:30,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:03:30,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 11:03:30,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21142898] [2025-03-08 11:03:30,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:03:30,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 11:03:30,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:03:30,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 11:03:30,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 11:03:30,147 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) [2025-03-08 11:03:30,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:03:30,385 INFO L93 Difference]: Finished difference Result 7501 states and 12582 transitions. [2025-03-08 11:03:30,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 11:03:30,386 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 [2025-03-08 11:03:30,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:03:30,413 INFO L225 Difference]: With dead ends: 7501 [2025-03-08 11:03:30,414 INFO L226 Difference]: Without dead ends: 5559 [2025-03-08 11:03:30,421 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 [2025-03-08 11:03:30,422 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 [2025-03-08 11:03:30,422 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] [2025-03-08 11:03:30,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5559 states. [2025-03-08 11:03:30,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5559 to 5541. [2025-03-08 11:03:30,724 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) [2025-03-08 11:03:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 9292 transitions. [2025-03-08 11:03:30,751 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 9292 transitions. Word has length 392 [2025-03-08 11:03:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:03:30,752 INFO L471 AbstractCegarLoop]: Abstraction has 5541 states and 9292 transitions. [2025-03-08 11:03:30,752 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) [2025-03-08 11:03:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 9292 transitions. [2025-03-08 11:03:30,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2025-03-08 11:03:30,758 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:03:30,759 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] [2025-03-08 11:03:30,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 11:03:30,759 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:03:30,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:03:30,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1692840034, now seen corresponding path program 1 times [2025-03-08 11:03:30,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:03:30,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964460941] [2025-03-08 11:03:30,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:03:30,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:03:30,779 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 392 statements into 1 equivalence classes. [2025-03-08 11:03:30,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 392 of 392 statements. [2025-03-08 11:03:30,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:03:30,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:03:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-08 11:03:31,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:03:31,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964460941] [2025-03-08 11:03:31,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964460941] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:03:31,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:03:31,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 11:03:31,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237744196] [2025-03-08 11:03:31,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:03:31,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 11:03:31,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:03:31,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 11:03:31,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-08 11:03:31,393 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) [2025-03-08 11:03:31,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:03:31,883 INFO L93 Difference]: Finished difference Result 14218 states and 23830 transitions. [2025-03-08 11:03:31,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 11:03:31,884 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 [2025-03-08 11:03:31,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:03:31,927 INFO L225 Difference]: With dead ends: 14218 [2025-03-08 11:03:31,927 INFO L226 Difference]: Without dead ends: 8680 [2025-03-08 11:03:31,944 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 [2025-03-08 11:03:31,945 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, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 11:03:31,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 725 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 11:03:31,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8680 states. [2025-03-08 11:03:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8680 to 8678. [2025-03-08 11:03:32,397 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) [2025-03-08 11:03:32,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8678 states to 8678 states and 14516 transitions. [2025-03-08 11:03:32,437 INFO L78 Accepts]: Start accepts. Automaton has 8678 states and 14516 transitions. Word has length 392 [2025-03-08 11:03:32,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:03:32,437 INFO L471 AbstractCegarLoop]: Abstraction has 8678 states and 14516 transitions. [2025-03-08 11:03:32,438 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) [2025-03-08 11:03:32,438 INFO L276 IsEmpty]: Start isEmpty. Operand 8678 states and 14516 transitions. [2025-03-08 11:03:32,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2025-03-08 11:03:32,445 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:03:32,445 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] [2025-03-08 11:03:32,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 11:03:32,446 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:03:32,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:03:32,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1615373185, now seen corresponding path program 1 times [2025-03-08 11:03:32,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:03:32,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160709001] [2025-03-08 11:03:32,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:03:32,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:03:32,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 393 statements into 1 equivalence classes. [2025-03-08 11:03:32,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 393 of 393 statements. [2025-03-08 11:03:32,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:03:32,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:03:32,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2025-03-08 11:03:32,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:03:32,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160709001] [2025-03-08 11:03:32,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160709001] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 11:03:32,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 11:03:32,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 11:03:32,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479968129] [2025-03-08 11:03:32,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 11:03:32,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 11:03:32,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:03:32,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 11:03:32,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 11:03:32,549 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) [2025-03-08 11:03:33,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:03:33,199 INFO L93 Difference]: Finished difference Result 23802 states and 39829 transitions. [2025-03-08 11:03:33,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 11:03:33,199 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 [2025-03-08 11:03:33,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:03:33,262 INFO L225 Difference]: With dead ends: 23802 [2025-03-08 11:03:33,263 INFO L226 Difference]: Without dead ends: 15156 [2025-03-08 11:03:33,289 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 [2025-03-08 11:03:33,290 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 [2025-03-08 11:03:33,290 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] [2025-03-08 11:03:33,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15156 states. [2025-03-08 11:03:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15156 to 15106. [2025-03-08 11:03:33,876 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) [2025-03-08 11:03:33,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15106 states to 15106 states and 25239 transitions. [2025-03-08 11:03:33,942 INFO L78 Accepts]: Start accepts. Automaton has 15106 states and 25239 transitions. Word has length 393 [2025-03-08 11:03:33,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:03:33,943 INFO L471 AbstractCegarLoop]: Abstraction has 15106 states and 25239 transitions. [2025-03-08 11:03:33,944 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) [2025-03-08 11:03:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 15106 states and 25239 transitions. [2025-03-08 11:03:33,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2025-03-08 11:03:33,954 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:03:33,954 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] [2025-03-08 11:03:33,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 11:03:33,954 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:03:33,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:03:33,955 INFO L85 PathProgramCache]: Analyzing trace with hash -988966375, now seen corresponding path program 1 times [2025-03-08 11:03:33,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:03:33,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084078064] [2025-03-08 11:03:33,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:03:33,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:03:33,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 393 statements into 1 equivalence classes. [2025-03-08 11:03:34,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 393 of 393 statements. [2025-03-08 11:03:34,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:03:34,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:03:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 114 proven. 66 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2025-03-08 11:03:34,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:03:34,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084078064] [2025-03-08 11:03:34,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084078064] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 11:03:34,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704039646] [2025-03-08 11:03:34,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:03:34,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:03:34,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:03:34,293 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) [2025-03-08 11:03:34,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 11:03:34,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 393 statements into 1 equivalence classes. [2025-03-08 11:03:34,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 393 of 393 statements. [2025-03-08 11:03:34,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:03:34,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:03:34,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 11:03:34,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 11:03:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3708 proven. 84 refuted. 0 times theorem prover too weak. 3528 trivial. 0 not checked. [2025-03-08 11:03:35,388 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 11:03:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 96 proven. 84 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2025-03-08 11:03:35,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704039646] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 11:03:35,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 11:03:35,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2025-03-08 11:03:35,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206735042] [2025-03-08 11:03:35,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 11:03:35,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 11:03:35,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:03:35,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 11:03:35,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2025-03-08 11:03:35,800 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) [2025-03-08 11:03:37,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:03:37,835 INFO L93 Difference]: Finished difference Result 38643 states and 63114 transitions. [2025-03-08 11:03:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-08 11:03:37,836 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 [2025-03-08 11:03:37,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:03:37,928 INFO L225 Difference]: With dead ends: 38643 [2025-03-08 11:03:37,929 INFO L226 Difference]: Without dead ends: 23573 [2025-03-08 11:03:37,974 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 [2025-03-08 11:03:37,975 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 1278 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2025-03-08 11:03:37,975 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] [2025-03-08 11:03:37,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23573 states. [2025-03-08 11:03:38,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23573 to 22956. [2025-03-08 11:03:38,984 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) [2025-03-08 11:03:39,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22956 states to 22956 states and 36461 transitions. [2025-03-08 11:03:39,071 INFO L78 Accepts]: Start accepts. Automaton has 22956 states and 36461 transitions. Word has length 393 [2025-03-08 11:03:39,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:03:39,072 INFO L471 AbstractCegarLoop]: Abstraction has 22956 states and 36461 transitions. [2025-03-08 11:03:39,072 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) [2025-03-08 11:03:39,072 INFO L276 IsEmpty]: Start isEmpty. Operand 22956 states and 36461 transitions. [2025-03-08 11:03:39,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2025-03-08 11:03:39,085 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:03:39,085 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] [2025-03-08 11:03:39,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 11:03:39,286 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 [2025-03-08 11:03:39,286 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:03:39,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:03:39,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1800139194, now seen corresponding path program 1 times [2025-03-08 11:03:39,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:03:39,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168884108] [2025-03-08 11:03:39,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:03:39,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:03:39,309 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 395 statements into 1 equivalence classes. [2025-03-08 11:03:39,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 395 of 395 statements. [2025-03-08 11:03:39,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:03:39,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 11:03:39,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384107859] [2025-03-08 11:03:39,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:03:39,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:03:39,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:03:39,472 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) [2025-03-08 11:03:39,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 11:03:39,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 395 statements into 1 equivalence classes. [2025-03-08 11:03:39,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 395 of 395 statements. [2025-03-08 11:03:39,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:03:39,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:03:39,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 11:03:39,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 11:03:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3720 proven. 90 refuted. 0 times theorem prover too weak. 3510 trivial. 0 not checked. [2025-03-08 11:03:40,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 11:03:40,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 11:03:40,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168884108] [2025-03-08 11:03:40,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 11:03:40,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384107859] [2025-03-08 11:03:40,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384107859] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 11:03:40,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-08 11:03:40,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2025-03-08 11:03:40,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673126575] [2025-03-08 11:03:40,271 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-08 11:03:40,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 11:03:40,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 11:03:40,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 11:03:40,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-08 11:03:40,272 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) [2025-03-08 11:03:42,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 11:03:42,642 INFO L93 Difference]: Finished difference Result 64990 states and 101848 transitions. [2025-03-08 11:03:42,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 11:03:42,643 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 [2025-03-08 11:03:42,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 11:03:42,795 INFO L225 Difference]: With dead ends: 64990 [2025-03-08 11:03:42,796 INFO L226 Difference]: Without dead ends: 42112 [2025-03-08 11:03:42,847 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 [2025-03-08 11:03:42,848 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, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 11:03:42,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 845 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 11:03:42,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42112 states. [2025-03-08 11:03:44,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42112 to 40936. [2025-03-08 11:03:44,606 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) [2025-03-08 11:03:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40936 states to 40936 states and 64188 transitions. [2025-03-08 11:03:44,757 INFO L78 Accepts]: Start accepts. Automaton has 40936 states and 64188 transitions. Word has length 395 [2025-03-08 11:03:44,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 11:03:44,759 INFO L471 AbstractCegarLoop]: Abstraction has 40936 states and 64188 transitions. [2025-03-08 11:03:44,759 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) [2025-03-08 11:03:44,759 INFO L276 IsEmpty]: Start isEmpty. Operand 40936 states and 64188 transitions. [2025-03-08 11:03:44,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2025-03-08 11:03:44,779 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 11:03:44,779 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] [2025-03-08 11:03:44,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 11:03:44,983 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 [2025-03-08 11:03:44,983 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 11:03:44,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 11:03:44,984 INFO L85 PathProgramCache]: Analyzing trace with hash -209964647, now seen corresponding path program 1 times [2025-03-08 11:03:44,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 11:03:44,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112637501] [2025-03-08 11:03:44,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:03:44,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 11:03:45,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 395 statements into 1 equivalence classes. [2025-03-08 11:03:45,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 395 of 395 statements. [2025-03-08 11:03:45,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:03:45,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 11:03:45,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650691857] [2025-03-08 11:03:45,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 11:03:45,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 11:03:45,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 11:03:45,169 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) [2025-03-08 11:03:45,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 11:03:45,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 395 statements into 1 equivalence classes. [2025-03-08 11:03:45,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 395 of 395 statements. [2025-03-08 11:03:45,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 11:03:45,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 11:03:45,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-03-08 11:03:45,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 11:03:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 5143 proven. 567 refuted. 0 times theorem prover too weak. 1610 trivial. 0 not checked. [2025-03-08 11:03:54,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 11:04:34,750 WARN L286 SmtUtils]: Spent 6.61s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)