./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-23.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 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-23.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 377c50164edaea0f53442aa9874bfca88923ba53cddca037aa8305c7918e29d9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 00:03:38,490 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 00:03:38,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 00:03:38,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 00:03:38,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 00:03:38,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 00:03:38,574 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 00:03:38,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 00:03:38,575 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 00:03:38,575 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 00:03:38,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 00:03:38,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 00:03:38,576 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 00:03:38,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 00:03:38,576 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 00:03:38,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 00:03:38,576 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 00:03:38,576 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 00:03:38,576 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 00:03:38,577 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 00:03:38,577 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 00:03:38,577 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 00:03:38,577 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 00:03:38,577 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 00:03:38,577 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 00:03:38,577 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 00:03:38,577 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 00:03:38,578 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 00:03:38,578 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 00:03:38,578 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 00:03:38,578 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 00:03:38,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 00:03:38,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 00:03:38,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 00:03:38,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 00:03:38,579 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 00:03:38,579 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 00:03:38,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 00:03:38,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 00:03:38,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 00:03:38,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 00:03:38,579 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 00:03:38,579 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 00:03:38,579 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 -> 377c50164edaea0f53442aa9874bfca88923ba53cddca037aa8305c7918e29d9 [2025-03-17 00:03:38,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 00:03:38,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 00:03:38,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 00:03:38,814 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 00:03:38,814 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 00:03:38,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-23.i [2025-03-17 00:03:39,967 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a5849932/15588c49c46440b7b3909758ba547528/FLAG0a710d204 [2025-03-17 00:03:40,226 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 00:03:40,227 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-23.i [2025-03-17 00:03:40,234 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a5849932/15588c49c46440b7b3909758ba547528/FLAG0a710d204 [2025-03-17 00:03:40,538 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a5849932/15588c49c46440b7b3909758ba547528 [2025-03-17 00:03:40,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 00:03:40,541 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 00:03:40,542 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 00:03:40,542 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 00:03:40,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 00:03:40,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:03:40" (1/1) ... [2025-03-17 00:03:40,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32fb96fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40, skipping insertion in model container [2025-03-17 00:03:40,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:03:40" (1/1) ... [2025-03-17 00:03:40,565 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 00:03:40,662 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-23.i[916,929] [2025-03-17 00:03:40,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 00:03:40,765 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 00:03:40,772 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-23.i[916,929] [2025-03-17 00:03:40,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 00:03:40,832 INFO L204 MainTranslator]: Completed translation [2025-03-17 00:03:40,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40 WrapperNode [2025-03-17 00:03:40,833 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 00:03:40,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 00:03:40,835 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 00:03:40,835 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 00:03:40,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40" (1/1) ... [2025-03-17 00:03:40,852 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40" (1/1) ... [2025-03-17 00:03:40,902 INFO L138 Inliner]: procedures = 26, calls = 90, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 516 [2025-03-17 00:03:40,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 00:03:40,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 00:03:40,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 00:03:40,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 00:03:40,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40" (1/1) ... [2025-03-17 00:03:40,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40" (1/1) ... [2025-03-17 00:03:40,923 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40" (1/1) ... [2025-03-17 00:03:40,952 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]. [2025-03-17 00:03:40,953 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40" (1/1) ... [2025-03-17 00:03:40,953 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40" (1/1) ... [2025-03-17 00:03:40,971 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40" (1/1) ... [2025-03-17 00:03:40,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40" (1/1) ... [2025-03-17 00:03:40,977 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40" (1/1) ... [2025-03-17 00:03:40,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40" (1/1) ... [2025-03-17 00:03:40,989 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 00:03:40,990 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 00:03:40,990 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 00:03:40,990 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 00:03:40,991 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40" (1/1) ... [2025-03-17 00:03:40,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 00:03:41,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:03:41,018 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) [2025-03-17 00:03:41,021 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 [2025-03-17 00:03:41,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 00:03:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 00:03:41,038 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 00:03:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 00:03:41,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 00:03:41,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 00:03:41,121 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 00:03:41,123 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 00:03:41,834 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2025-03-17 00:03:41,834 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 00:03:41,857 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 00:03:41,860 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 00:03:41,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:03:41 BoogieIcfgContainer [2025-03-17 00:03:41,860 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 00:03:41,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 00:03:41,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 00:03:41,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 00:03:41,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 12:03:40" (1/3) ... [2025-03-17 00:03:41,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e172eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:03:41, skipping insertion in model container [2025-03-17 00:03:41,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:03:40" (2/3) ... [2025-03-17 00:03:41,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e172eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:03:41, skipping insertion in model container [2025-03-17 00:03:41,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:03:41" (3/3) ... [2025-03-17 00:03:41,868 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-23.i [2025-03-17 00:03:41,879 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 00:03:41,883 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-23.i that has 2 procedures, 214 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 00:03:41,927 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 00:03:41,936 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;@58c32901, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 00:03:41,937 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 00:03:41,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 214 states, 134 states have (on average 1.5223880597014925) internal successors, (204), 135 states have internal predecessors, (204), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2025-03-17 00:03:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2025-03-17 00:03:41,987 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:03:41,988 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:03:41,989 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:03:41,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:03:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1751215328, now seen corresponding path program 1 times [2025-03-17 00:03:42,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:03:42,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228444176] [2025-03-17 00:03:42,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:03:42,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:03:42,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 479 statements into 1 equivalence classes. [2025-03-17 00:03:42,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 479 of 479 statements. [2025-03-17 00:03:42,138 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:03:42,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:03:42,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2025-03-17 00:03:42,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:03:42,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228444176] [2025-03-17 00:03:42,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228444176] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 00:03:42,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720265253] [2025-03-17 00:03:42,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:03:42,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 00:03:42,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:03:42,417 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) [2025-03-17 00:03:42,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 00:03:42,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 479 statements into 1 equivalence classes. [2025-03-17 00:03:42,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 479 of 479 statements. [2025-03-17 00:03:42,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:03:42,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:03:42,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 00:03:42,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 00:03:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 11552 trivial. 0 not checked. [2025-03-17 00:03:42,745 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 00:03:42,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720265253] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:03:42,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 00:03:42,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 00:03:42,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90750107] [2025-03-17 00:03:42,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:03:42,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 00:03:42,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:03:42,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 00:03:42,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 00:03:42,766 INFO L87 Difference]: Start difference. First operand has 214 states, 134 states have (on average 1.5223880597014925) internal successors, (204), 135 states have internal predecessors, (204), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) Second operand has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2025-03-17 00:03:42,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:03:42,824 INFO L93 Difference]: Finished difference Result 425 states and 791 transitions. [2025-03-17 00:03:42,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 00:03:42,827 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) Word has length 479 [2025-03-17 00:03:42,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:03:42,835 INFO L225 Difference]: With dead ends: 425 [2025-03-17 00:03:42,836 INFO L226 Difference]: Without dead ends: 212 [2025-03-17 00:03:42,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 00:03:42,841 INFO L435 NwaCegarLoop]: 346 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:03:42,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 346 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 00:03:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2025-03-17 00:03:42,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2025-03-17 00:03:42,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 133 states have (on average 1.4887218045112782) internal successors, (198), 133 states have internal predecessors, (198), 77 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2025-03-17 00:03:42,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 352 transitions. [2025-03-17 00:03:42,898 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 352 transitions. Word has length 479 [2025-03-17 00:03:42,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:03:42,900 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 352 transitions. [2025-03-17 00:03:42,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 2 states have call successors, (77), 2 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 2 states have call successors, (77) [2025-03-17 00:03:42,900 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 352 transitions. [2025-03-17 00:03:42,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2025-03-17 00:03:42,908 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:03:42,908 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:03:42,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 00:03:43,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 00:03:43,112 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:03:43,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:03:43,113 INFO L85 PathProgramCache]: Analyzing trace with hash -51822491, now seen corresponding path program 1 times [2025-03-17 00:03:43,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:03:43,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882697391] [2025-03-17 00:03:43,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:03:43,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:03:43,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 479 statements into 1 equivalence classes. [2025-03-17 00:03:43,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 479 of 479 statements. [2025-03-17 00:03:43,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:03:43,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:03:43,963 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-03-17 00:03:43,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:03:43,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882697391] [2025-03-17 00:03:43,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882697391] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:03:43,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:03:43,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 00:03:43,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691863758] [2025-03-17 00:03:43,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:03:43,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 00:03:43,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:03:43,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 00:03:43,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 00:03:43,969 INFO L87 Difference]: Start difference. First operand 212 states and 352 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-03-17 00:03:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:03:44,136 INFO L93 Difference]: Finished difference Result 635 states and 1056 transitions. [2025-03-17 00:03:44,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 00:03:44,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 479 [2025-03-17 00:03:44,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:03:44,144 INFO L225 Difference]: With dead ends: 635 [2025-03-17 00:03:44,145 INFO L226 Difference]: Without dead ends: 424 [2025-03-17 00:03:44,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 00:03:44,146 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 214 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 00:03:44,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1184 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 00:03:44,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2025-03-17 00:03:44,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 420. [2025-03-17 00:03:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 263 states have (on average 1.4866920152091254) internal successors, (391), 263 states have internal predecessors, (391), 154 states have call successors, (154), 2 states have call predecessors, (154), 2 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2025-03-17 00:03:44,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 699 transitions. [2025-03-17 00:03:44,210 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 699 transitions. Word has length 479 [2025-03-17 00:03:44,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:03:44,212 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 699 transitions. [2025-03-17 00:03:44,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-03-17 00:03:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 699 transitions. [2025-03-17 00:03:44,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2025-03-17 00:03:44,219 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:03:44,219 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:03:44,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 00:03:44,219 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:03:44,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:03:44,221 INFO L85 PathProgramCache]: Analyzing trace with hash -853511624, now seen corresponding path program 1 times [2025-03-17 00:03:44,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:03:44,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588775280] [2025-03-17 00:03:44,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:03:44,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:03:44,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 480 statements into 1 equivalence classes. [2025-03-17 00:03:44,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 480 of 480 statements. [2025-03-17 00:03:44,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:03:44,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:03:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-03-17 00:03:44,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:03:44,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588775280] [2025-03-17 00:03:44,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588775280] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:03:44,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:03:44,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 00:03:44,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979717770] [2025-03-17 00:03:44,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:03:44,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 00:03:44,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:03:44,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 00:03:44,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 00:03:44,966 INFO L87 Difference]: Start difference. First operand 420 states and 699 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-03-17 00:03:45,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:03:45,551 INFO L93 Difference]: Finished difference Result 1810 states and 2991 transitions. [2025-03-17 00:03:45,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 00:03:45,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 480 [2025-03-17 00:03:45,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:03:45,561 INFO L225 Difference]: With dead ends: 1810 [2025-03-17 00:03:45,561 INFO L226 Difference]: Without dead ends: 1391 [2025-03-17 00:03:45,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-17 00:03:45,563 INFO L435 NwaCegarLoop]: 533 mSDtfsCounter, 586 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 00:03:45,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1986 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 00:03:45,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2025-03-17 00:03:45,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1381. [2025-03-17 00:03:45,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 808 states have (on average 1.4282178217821782) internal successors, (1154), 812 states have internal predecessors, (1154), 564 states have call successors, (564), 8 states have call predecessors, (564), 8 states have return successors, (564), 560 states have call predecessors, (564), 564 states have call successors, (564) [2025-03-17 00:03:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 2282 transitions. [2025-03-17 00:03:45,736 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 2282 transitions. Word has length 480 [2025-03-17 00:03:45,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:03:45,737 INFO L471 AbstractCegarLoop]: Abstraction has 1381 states and 2282 transitions. [2025-03-17 00:03:45,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-03-17 00:03:45,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 2282 transitions. [2025-03-17 00:03:45,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2025-03-17 00:03:45,740 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:03:45,740 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:03:45,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 00:03:45,741 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:03:45,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:03:45,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1220088190, now seen corresponding path program 1 times [2025-03-17 00:03:45,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:03:45,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137105476] [2025-03-17 00:03:45,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:03:45,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:03:45,766 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-17 00:03:45,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-17 00:03:45,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:03:45,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:03:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-03-17 00:03:45,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:03:45,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137105476] [2025-03-17 00:03:45,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137105476] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:03:45,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:03:45,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 00:03:45,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735686994] [2025-03-17 00:03:45,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:03:45,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 00:03:45,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:03:45,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 00:03:45,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 00:03:45,885 INFO L87 Difference]: Start difference. First operand 1381 states and 2282 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-03-17 00:03:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:03:46,035 INFO L93 Difference]: Finished difference Result 3809 states and 6292 transitions. [2025-03-17 00:03:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 00:03:46,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 481 [2025-03-17 00:03:46,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:03:46,050 INFO L225 Difference]: With dead ends: 3809 [2025-03-17 00:03:46,050 INFO L226 Difference]: Without dead ends: 2429 [2025-03-17 00:03:46,056 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 [2025-03-17 00:03:46,057 INFO L435 NwaCegarLoop]: 344 mSDtfsCounter, 241 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:03:46,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 675 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 00:03:46,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2025-03-17 00:03:46,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2419. [2025-03-17 00:03:46,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2419 states, 1462 states have (on average 1.439124487004104) internal successors, (2104), 1474 states have internal predecessors, (2104), 940 states have call successors, (940), 16 states have call predecessors, (940), 16 states have return successors, (940), 928 states have call predecessors, (940), 940 states have call successors, (940) [2025-03-17 00:03:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2419 states to 2419 states and 3984 transitions. [2025-03-17 00:03:46,295 INFO L78 Accepts]: Start accepts. Automaton has 2419 states and 3984 transitions. Word has length 481 [2025-03-17 00:03:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:03:46,296 INFO L471 AbstractCegarLoop]: Abstraction has 2419 states and 3984 transitions. [2025-03-17 00:03:46,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-03-17 00:03:46,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2419 states and 3984 transitions. [2025-03-17 00:03:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2025-03-17 00:03:46,300 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:03:46,300 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:03:46,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 00:03:46,300 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:03:46,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:03:46,301 INFO L85 PathProgramCache]: Analyzing trace with hash 482552281, now seen corresponding path program 1 times [2025-03-17 00:03:46,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:03:46,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451979031] [2025-03-17 00:03:46,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:03:46,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:03:46,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-17 00:03:46,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-17 00:03:46,476 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:03:46,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:03:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-03-17 00:03:46,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:03:46,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451979031] [2025-03-17 00:03:46,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451979031] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:03:46,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:03:46,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 00:03:46,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970915031] [2025-03-17 00:03:46,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:03:46,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 00:03:46,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:03:46,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 00:03:46,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 00:03:46,917 INFO L87 Difference]: Start difference. First operand 2419 states and 3984 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-03-17 00:03:47,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:03:47,524 INFO L93 Difference]: Finished difference Result 8761 states and 14381 transitions. [2025-03-17 00:03:47,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 00:03:47,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 481 [2025-03-17 00:03:47,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:03:47,570 INFO L225 Difference]: With dead ends: 8761 [2025-03-17 00:03:47,570 INFO L226 Difference]: Without dead ends: 6343 [2025-03-17 00:03:47,581 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 [2025-03-17 00:03:47,583 INFO L435 NwaCegarLoop]: 485 mSDtfsCounter, 437 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 00:03:47,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1179 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 00:03:47,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6343 states. [2025-03-17 00:03:48,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6343 to 4551. [2025-03-17 00:03:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4551 states, 2770 states have (on average 1.444765342960289) internal successors, (4002), 2798 states have internal predecessors, (4002), 1748 states have call successors, (1748), 32 states have call predecessors, (1748), 32 states have return successors, (1748), 1720 states have call predecessors, (1748), 1748 states have call successors, (1748) [2025-03-17 00:03:48,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4551 states to 4551 states and 7498 transitions. [2025-03-17 00:03:48,084 INFO L78 Accepts]: Start accepts. Automaton has 4551 states and 7498 transitions. Word has length 481 [2025-03-17 00:03:48,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:03:48,087 INFO L471 AbstractCegarLoop]: Abstraction has 4551 states and 7498 transitions. [2025-03-17 00:03:48,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-03-17 00:03:48,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4551 states and 7498 transitions. [2025-03-17 00:03:48,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2025-03-17 00:03:48,094 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:03:48,094 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:03:48,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 00:03:48,095 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:03:48,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:03:48,098 INFO L85 PathProgramCache]: Analyzing trace with hash -514520072, now seen corresponding path program 1 times [2025-03-17 00:03:48,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:03:48,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279053951] [2025-03-17 00:03:48,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:03:48,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:03:48,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-17 00:03:48,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-17 00:03:48,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:03:48,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:03:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-03-17 00:03:48,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:03:48,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279053951] [2025-03-17 00:03:48,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279053951] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:03:48,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:03:48,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 00:03:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977684020] [2025-03-17 00:03:48,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:03:48,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 00:03:48,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:03:48,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 00:03:48,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-17 00:03:48,878 INFO L87 Difference]: Start difference. First operand 4551 states and 7498 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-03-17 00:03:50,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:03:50,437 INFO L93 Difference]: Finished difference Result 14625 states and 23933 transitions. [2025-03-17 00:03:50,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 00:03:50,438 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), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 481 [2025-03-17 00:03:50,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:03:50,502 INFO L225 Difference]: With dead ends: 14625 [2025-03-17 00:03:50,502 INFO L226 Difference]: Without dead ends: 9983 [2025-03-17 00:03:50,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-03-17 00:03:50,519 INFO L435 NwaCegarLoop]: 334 mSDtfsCounter, 1373 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:03:50,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 1130 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 00:03:50,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9983 states. [2025-03-17 00:03:51,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9983 to 4251. [2025-03-17 00:03:51,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4251 states, 2838 states have (on average 1.5116279069767442) internal successors, (4290), 2858 states have internal predecessors, (4290), 1372 states have call successors, (1372), 40 states have call predecessors, (1372), 40 states have return successors, (1372), 1352 states have call predecessors, (1372), 1372 states have call successors, (1372) [2025-03-17 00:03:51,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4251 states to 4251 states and 7034 transitions. [2025-03-17 00:03:51,187 INFO L78 Accepts]: Start accepts. Automaton has 4251 states and 7034 transitions. Word has length 481 [2025-03-17 00:03:51,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:03:51,188 INFO L471 AbstractCegarLoop]: Abstraction has 4251 states and 7034 transitions. [2025-03-17 00:03:51,189 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), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-03-17 00:03:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4251 states and 7034 transitions. [2025-03-17 00:03:51,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2025-03-17 00:03:51,197 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:03:51,197 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:03:51,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 00:03:51,198 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:03:51,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:03:51,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1594657062, now seen corresponding path program 1 times [2025-03-17 00:03:51,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:03:51,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353294805] [2025-03-17 00:03:51,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:03:51,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:03:51,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-17 00:03:51,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-17 00:03:51,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:03:51,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:03:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-03-17 00:03:52,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:03:52,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353294805] [2025-03-17 00:03:52,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353294805] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:03:52,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:03:52,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-17 00:03:52,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586947005] [2025-03-17 00:03:52,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:03:52,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 00:03:52,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:03:52,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 00:03:52,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-17 00:03:52,704 INFO L87 Difference]: Start difference. First operand 4251 states and 7034 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-03-17 00:04:01,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:01,095 INFO L93 Difference]: Finished difference Result 25474 states and 42425 transitions. [2025-03-17 00:04:01,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-03-17 00:04:01,096 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 481 [2025-03-17 00:04:01,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:01,171 INFO L225 Difference]: With dead ends: 25474 [2025-03-17 00:04:01,172 INFO L226 Difference]: Without dead ends: 21224 [2025-03-17 00:04:01,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=573, Invalid=1589, Unknown=0, NotChecked=0, Total=2162 [2025-03-17 00:04:01,197 INFO L435 NwaCegarLoop]: 713 mSDtfsCounter, 4173 mSDsluCounter, 3623 mSDsCounter, 0 mSdLazyCounter, 3192 mSolverCounterSat, 1921 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 4336 SdHoareTripleChecker+Invalid, 5113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1921 IncrementalHoareTripleChecker+Valid, 3192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:01,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4173 Valid, 4336 Invalid, 5113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1921 Valid, 3192 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2025-03-17 00:04:01,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21224 states. [2025-03-17 00:04:02,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21224 to 12384. [2025-03-17 00:04:02,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12384 states, 9295 states have (on average 1.5922538999462077) internal successors, (14800), 9375 states have internal predecessors, (14800), 2964 states have call successors, (2964), 124 states have call predecessors, (2964), 124 states have return successors, (2964), 2884 states have call predecessors, (2964), 2964 states have call successors, (2964) [2025-03-17 00:04:02,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12384 states to 12384 states and 20728 transitions. [2025-03-17 00:04:02,181 INFO L78 Accepts]: Start accepts. Automaton has 12384 states and 20728 transitions. Word has length 481 [2025-03-17 00:04:02,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:02,182 INFO L471 AbstractCegarLoop]: Abstraction has 12384 states and 20728 transitions. [2025-03-17 00:04:02,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-03-17 00:04:02,183 INFO L276 IsEmpty]: Start isEmpty. Operand 12384 states and 20728 transitions. [2025-03-17 00:04:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2025-03-17 00:04:02,195 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:02,196 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:02,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 00:04:02,196 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:02,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:02,197 INFO L85 PathProgramCache]: Analyzing trace with hash -748750209, now seen corresponding path program 1 times [2025-03-17 00:04:02,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:02,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426881076] [2025-03-17 00:04:02,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:02,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:02,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-17 00:04:02,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-17 00:04:02,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:02,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 162 proven. 66 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2025-03-17 00:04:02,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:02,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426881076] [2025-03-17 00:04:02,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426881076] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 00:04:02,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242914851] [2025-03-17 00:04:02,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:02,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 00:04:02,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:04:02,603 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) [2025-03-17 00:04:02,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 00:04:02,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-17 00:04:02,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-17 00:04:02,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:02,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:02,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 00:04:02,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 00:04:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4206 proven. 51 refuted. 0 times theorem prover too weak. 7447 trivial. 0 not checked. [2025-03-17 00:04:03,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 00:04:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 177 proven. 51 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2025-03-17 00:04:03,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242914851] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 00:04:03,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 00:04:03,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-03-17 00:04:03,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248181307] [2025-03-17 00:04:03,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 00:04:03,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 00:04:03,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:03,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 00:04:03,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-17 00:04:03,477 INFO L87 Difference]: Start difference. First operand 12384 states and 20728 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 3 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2025-03-17 00:04:04,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:04,966 INFO L93 Difference]: Finished difference Result 22695 states and 37407 transitions. [2025-03-17 00:04:04,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 00:04:04,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 3 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) Word has length 481 [2025-03-17 00:04:04,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:05,011 INFO L225 Difference]: With dead ends: 22695 [2025-03-17 00:04:05,012 INFO L226 Difference]: Without dead ends: 10312 [2025-03-17 00:04:05,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 959 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2025-03-17 00:04:05,039 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 373 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:05,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 852 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 00:04:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10312 states. [2025-03-17 00:04:05,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10312 to 9642. [2025-03-17 00:04:05,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9642 states, 6483 states have (on average 1.4607434829554218) internal successors, (9470), 6564 states have internal predecessors, (9470), 3011 states have call successors, (3011), 147 states have call predecessors, (3011), 147 states have return successors, (3011), 2930 states have call predecessors, (3011), 3011 states have call successors, (3011) [2025-03-17 00:04:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9642 states to 9642 states and 15492 transitions. [2025-03-17 00:04:05,934 INFO L78 Accepts]: Start accepts. Automaton has 9642 states and 15492 transitions. Word has length 481 [2025-03-17 00:04:05,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:05,935 INFO L471 AbstractCegarLoop]: Abstraction has 9642 states and 15492 transitions. [2025-03-17 00:04:05,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 3 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2025-03-17 00:04:05,936 INFO L276 IsEmpty]: Start isEmpty. Operand 9642 states and 15492 transitions. [2025-03-17 00:04:05,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2025-03-17 00:04:05,944 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:05,944 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:05,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 00:04:06,149 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,SelfDestructingSolverStorable7 [2025-03-17 00:04:06,149 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:06,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:06,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1293000798, now seen corresponding path program 1 times [2025-03-17 00:04:06,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:06,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612875868] [2025-03-17 00:04:06,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:06,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:06,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-17 00:04:06,230 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-17 00:04:06,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:06,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:06,607 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11704 trivial. 0 not checked. [2025-03-17 00:04:06,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:06,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612875868] [2025-03-17 00:04:06,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612875868] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:04:06,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:04:06,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 00:04:06,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76382633] [2025-03-17 00:04:06,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:04:06,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 00:04:06,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:06,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 00:04:06,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 00:04:06,609 INFO L87 Difference]: Start difference. First operand 9642 states and 15492 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-03-17 00:04:07,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:07,728 INFO L93 Difference]: Finished difference Result 19285 states and 30931 transitions. [2025-03-17 00:04:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 00:04:07,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) Word has length 481 [2025-03-17 00:04:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:07,780 INFO L225 Difference]: With dead ends: 19285 [2025-03-17 00:04:07,780 INFO L226 Difference]: Without dead ends: 9682 [2025-03-17 00:04:07,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 00:04:07,809 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 402 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:07,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 561 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 00:04:07,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9682 states. [2025-03-17 00:04:08,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9682 to 9682. [2025-03-17 00:04:08,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9682 states, 6513 states have (on average 1.4512513434669123) internal successors, (9452), 6594 states have internal predecessors, (9452), 3011 states have call successors, (3011), 157 states have call predecessors, (3011), 157 states have return successors, (3011), 2930 states have call predecessors, (3011), 3011 states have call successors, (3011) [2025-03-17 00:04:08,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9682 states to 9682 states and 15474 transitions. [2025-03-17 00:04:08,832 INFO L78 Accepts]: Start accepts. Automaton has 9682 states and 15474 transitions. Word has length 481 [2025-03-17 00:04:08,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:08,833 INFO L471 AbstractCegarLoop]: Abstraction has 9682 states and 15474 transitions. [2025-03-17 00:04:08,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 1 states have call successors, (77), 1 states have call predecessors, (77), 1 states have return successors, (77), 1 states have call predecessors, (77), 1 states have call successors, (77) [2025-03-17 00:04:08,834 INFO L276 IsEmpty]: Start isEmpty. Operand 9682 states and 15474 transitions. [2025-03-17 00:04:08,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2025-03-17 00:04:08,841 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:08,841 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:08,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 00:04:08,841 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:08,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:08,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1038264253, now seen corresponding path program 1 times [2025-03-17 00:04:08,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:08,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045532969] [2025-03-17 00:04:08,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:08,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:08,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-17 00:04:08,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-17 00:04:08,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:08,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 168 proven. 60 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2025-03-17 00:04:09,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:09,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045532969] [2025-03-17 00:04:09,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045532969] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 00:04:09,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464998836] [2025-03-17 00:04:09,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:09,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 00:04:09,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:04:09,629 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) [2025-03-17 00:04:09,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 00:04:09,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-17 00:04:09,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-17 00:04:09,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:09,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:09,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-17 00:04:09,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 00:04:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4668 proven. 60 refuted. 0 times theorem prover too weak. 6976 trivial. 0 not checked. [2025-03-17 00:04:10,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 00:04:11,218 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 168 proven. 60 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2025-03-17 00:04:11,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464998836] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 00:04:11,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 00:04:11,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-03-17 00:04:11,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707575012] [2025-03-17 00:04:11,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 00:04:11,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-17 00:04:11,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:11,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-17 00:04:11,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2025-03-17 00:04:11,221 INFO L87 Difference]: Start difference. First operand 9682 states and 15474 transitions. Second operand has 19 states, 19 states have (on average 11.68421052631579) internal successors, (222), 19 states have internal predecessors, (222), 5 states have call successors, (174), 3 states have call predecessors, (174), 6 states have return successors, (175), 5 states have call predecessors, (175), 5 states have call successors, (175) [2025-03-17 00:04:14,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:14,372 INFO L93 Difference]: Finished difference Result 25637 states and 40751 transitions. [2025-03-17 00:04:14,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-17 00:04:14,373 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.68421052631579) internal successors, (222), 19 states have internal predecessors, (222), 5 states have call successors, (174), 3 states have call predecessors, (174), 6 states have return successors, (175), 5 states have call predecessors, (175), 5 states have call successors, (175) Word has length 481 [2025-03-17 00:04:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:14,442 INFO L225 Difference]: With dead ends: 25637 [2025-03-17 00:04:14,443 INFO L226 Difference]: Without dead ends: 15630 [2025-03-17 00:04:14,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 986 GetRequests, 954 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=334, Invalid=788, Unknown=0, NotChecked=0, Total=1122 [2025-03-17 00:04:14,469 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 1422 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 1256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1256 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:14,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1810 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1256 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 00:04:14,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15630 states. [2025-03-17 00:04:15,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15630 to 9656. [2025-03-17 00:04:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9656 states, 6477 states have (on average 1.4234985332715764) internal successors, (9220), 6558 states have internal predecessors, (9220), 3011 states have call successors, (3011), 167 states have call predecessors, (3011), 167 states have return successors, (3011), 2930 states have call predecessors, (3011), 3011 states have call successors, (3011) [2025-03-17 00:04:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9656 states to 9656 states and 15242 transitions. [2025-03-17 00:04:15,705 INFO L78 Accepts]: Start accepts. Automaton has 9656 states and 15242 transitions. Word has length 481 [2025-03-17 00:04:15,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:15,706 INFO L471 AbstractCegarLoop]: Abstraction has 9656 states and 15242 transitions. [2025-03-17 00:04:15,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.68421052631579) internal successors, (222), 19 states have internal predecessors, (222), 5 states have call successors, (174), 3 states have call predecessors, (174), 6 states have return successors, (175), 5 states have call predecessors, (175), 5 states have call successors, (175) [2025-03-17 00:04:15,707 INFO L276 IsEmpty]: Start isEmpty. Operand 9656 states and 15242 transitions. [2025-03-17 00:04:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2025-03-17 00:04:15,714 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:15,714 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:15,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 00:04:15,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 00:04:15,915 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:15,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:15,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1026948126, now seen corresponding path program 1 times [2025-03-17 00:04:15,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:15,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599125369] [2025-03-17 00:04:15,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:15,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:15,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-17 00:04:16,031 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-17 00:04:16,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:16,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 198 proven. 30 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2025-03-17 00:04:16,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:04:16,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599125369] [2025-03-17 00:04:16,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599125369] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 00:04:16,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212729459] [2025-03-17 00:04:16,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:16,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 00:04:16,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:04:16,204 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 00:04:16,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 00:04:16,364 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-17 00:04:16,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-17 00:04:16,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:16,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:16,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 00:04:16,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 00:04:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 2848 proven. 30 refuted. 0 times theorem prover too weak. 8826 trivial. 0 not checked. [2025-03-17 00:04:16,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 00:04:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 198 proven. 30 refuted. 0 times theorem prover too weak. 11476 trivial. 0 not checked. [2025-03-17 00:04:16,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212729459] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 00:04:16,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 00:04:16,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-03-17 00:04:16,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433599672] [2025-03-17 00:04:16,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 00:04:16,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 00:04:16,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:04:16,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 00:04:16,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-17 00:04:16,890 INFO L87 Difference]: Start difference. First operand 9656 states and 15242 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2025-03-17 00:04:18,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:04:18,095 INFO L93 Difference]: Finished difference Result 17565 states and 27657 transitions. [2025-03-17 00:04:18,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 00:04:18,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) Word has length 481 [2025-03-17 00:04:18,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:04:18,136 INFO L225 Difference]: With dead ends: 17565 [2025-03-17 00:04:18,136 INFO L226 Difference]: Without dead ends: 7834 [2025-03-17 00:04:18,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 959 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-03-17 00:04:18,162 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 209 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 00:04:18,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 579 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 00:04:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7834 states. [2025-03-17 00:04:19,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7834 to 7654. [2025-03-17 00:04:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7654 states, 5339 states have (on average 1.4377224199288257) internal successors, (7676), 5402 states have internal predecessors, (7676), 2193 states have call successors, (2193), 121 states have call predecessors, (2193), 121 states have return successors, (2193), 2130 states have call predecessors, (2193), 2193 states have call successors, (2193) [2025-03-17 00:04:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7654 states to 7654 states and 12062 transitions. [2025-03-17 00:04:19,095 INFO L78 Accepts]: Start accepts. Automaton has 7654 states and 12062 transitions. Word has length 481 [2025-03-17 00:04:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:04:19,095 INFO L471 AbstractCegarLoop]: Abstraction has 7654 states and 12062 transitions. [2025-03-17 00:04:19,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 2 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2025-03-17 00:04:19,096 INFO L276 IsEmpty]: Start isEmpty. Operand 7654 states and 12062 transitions. [2025-03-17 00:04:19,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2025-03-17 00:04:19,101 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:04:19,102 INFO L218 NwaCegarLoop]: trace histogram [77, 77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:04:19,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 00:04:19,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 00:04:19,303 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:04:19,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:04:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash -105201680, now seen corresponding path program 1 times [2025-03-17 00:04:19,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:04:19,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194333591] [2025-03-17 00:04:19,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:04:19,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-17 00:04:19,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-17 00:04:19,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:19,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 00:04:19,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1461238924] [2025-03-17 00:04:19,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:04:19,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 00:04:19,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:04:19,517 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 00:04:19,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 00:04:19,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 481 statements into 1 equivalence classes. [2025-03-17 00:04:19,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 481 of 481 statements. [2025-03-17 00:04:19,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:04:19,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:04:19,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-17 00:04:19,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 00:04:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 11704 backedges. 4470 proven. 681 refuted. 0 times theorem prover too weak. 6553 trivial. 0 not checked. [2025-03-17 00:04:22,822 INFO L312 TraceCheckSpWp]: Computing backward predicates...