./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-99.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-99.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 488e55d188f50c80d73146c130bc528a02bef0b3d213155fb7178728f7b142f2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:24:22,947 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:24:23,029 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:24:23,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:24:23,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:24:23,048 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:24:23,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:24:23,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:24:23,049 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:24:23,049 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:24:23,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:24:23,049 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:24:23,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:24:23,050 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:24:23,050 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:24:23,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:24:23,050 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:24:23,050 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:24:23,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:24:23,050 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:24:23,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:24:23,050 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:24:23,050 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:24:23,051 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:24:23,051 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:24:23,051 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:24:23,051 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:24:23,051 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:24:23,051 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:24:23,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:24:23,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:24:23,051 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:24:23,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:24:23,051 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:24:23,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:24:23,051 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:24:23,051 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:24:23,051 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:24:23,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:24:23,053 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:24:23,053 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:24:23,053 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:24:23,053 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:24:23,053 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 488e55d188f50c80d73146c130bc528a02bef0b3d213155fb7178728f7b142f2 [2025-02-06 02:24:23,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:24:23,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:24:23,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:24:23,341 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:24:23,341 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:24:23,342 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-99.i [2025-02-06 02:24:24,630 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d4d9a6a91/6d5e4fbad4b84566b8b48886db418ed6/FLAGf41f1081c [2025-02-06 02:24:24,955 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:24:24,955 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-99.i [2025-02-06 02:24:24,964 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d4d9a6a91/6d5e4fbad4b84566b8b48886db418ed6/FLAGf41f1081c [2025-02-06 02:24:24,976 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d4d9a6a91/6d5e4fbad4b84566b8b48886db418ed6 [2025-02-06 02:24:24,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:24:24,979 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:24:24,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:24:24,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:24:24,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:24:24,984 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:24:24" (1/1) ... [2025-02-06 02:24:24,984 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1993b702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:24, skipping insertion in model container [2025-02-06 02:24:24,984 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:24:24" (1/1) ... [2025-02-06 02:24:25,011 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:24:25,119 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-99.i[916,929] [2025-02-06 02:24:25,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:24:25,238 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:24:25,245 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-99.i[916,929] [2025-02-06 02:24:25,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:24:25,296 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:24:25,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:25 WrapperNode [2025-02-06 02:24:25,297 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:24:25,298 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:24:25,298 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:24:25,298 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:24:25,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:25" (1/1) ... [2025-02-06 02:24:25,324 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:25" (1/1) ... [2025-02-06 02:24:25,391 INFO L138 Inliner]: procedures = 26, calls = 72, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 434 [2025-02-06 02:24:25,391 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:24:25,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:24:25,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:24:25,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:24:25,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:25" (1/1) ... [2025-02-06 02:24:25,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:25" (1/1) ... [2025-02-06 02:24:25,407 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:25" (1/1) ... [2025-02-06 02:24:25,444 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 02:24:25,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:25" (1/1) ... [2025-02-06 02:24:25,446 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:25" (1/1) ... [2025-02-06 02:24:25,468 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:25" (1/1) ... [2025-02-06 02:24:25,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:25" (1/1) ... [2025-02-06 02:24:25,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:25" (1/1) ... [2025-02-06 02:24:25,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:25" (1/1) ... [2025-02-06 02:24:25,505 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:24:25,506 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:24:25,507 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:24:25,507 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:24:25,508 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:25" (1/1) ... [2025-02-06 02:24:25,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:24:25,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:24:25,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 02:24:25,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 02:24:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:24:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:24:25,554 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:24:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:24:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:24:25,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:24:25,635 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:24:25,636 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:24:26,228 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L393: havoc property_#t~ite42#1;havoc property_#t~bitwise41#1;havoc property_#t~short43#1;havoc property_#t~bitwise44#1;havoc property_#t~short45#1; [2025-02-06 02:24:26,282 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2025-02-06 02:24:26,283 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:24:26,297 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:24:26,298 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 02:24:26,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:24:26 BoogieIcfgContainer [2025-02-06 02:24:26,298 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:24:26,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:24:26,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:24:26,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:24:26,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:24:24" (1/3) ... [2025-02-06 02:24:26,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4caa71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:24:26, skipping insertion in model container [2025-02-06 02:24:26,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:24:25" (2/3) ... [2025-02-06 02:24:26,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4caa71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:24:26, skipping insertion in model container [2025-02-06 02:24:26,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:24:26" (3/3) ... [2025-02-06 02:24:26,306 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-99.i [2025-02-06 02:24:26,319 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:24:26,321 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-99.i that has 2 procedures, 188 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:24:26,368 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:24:26,377 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;@42851395, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:24:26,379 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:24:26,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 188 states, 126 states have (on average 1.4761904761904763) internal successors, (186), 127 states have internal predecessors, (186), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2025-02-06 02:24:26,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2025-02-06 02:24:26,401 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:24:26,403 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:24:26,403 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:24:26,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:24:26,408 INFO L85 PathProgramCache]: Analyzing trace with hash 765754497, now seen corresponding path program 1 times [2025-02-06 02:24:26,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:24:26,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719362735] [2025-02-06 02:24:26,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:24:26,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:24:26,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 378 statements into 1 equivalence classes. [2025-02-06 02:24:26,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 378 of 378 statements. [2025-02-06 02:24:26,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:24:26,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:24:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2025-02-06 02:24:26,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:24:26,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719362735] [2025-02-06 02:24:26,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719362735] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:24:26,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622946855] [2025-02-06 02:24:26,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:24:26,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:24:26,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:24:26,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:24:26,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 02:24:27,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 378 statements into 1 equivalence classes. [2025-02-06 02:24:27,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 378 of 378 statements. [2025-02-06 02:24:27,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:24:27,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:24:27,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 02:24:27,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:24:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2025-02-06 02:24:27,181 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:24:27,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622946855] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:24:27,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:24:27,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 02:24:27,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477824055] [2025-02-06 02:24:27,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:24:27,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 02:24:27,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:24:27,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 02:24:27,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:24:27,203 INFO L87 Difference]: Start difference. First operand has 188 states, 126 states have (on average 1.4761904761904763) internal successors, (186), 127 states have internal predecessors, (186), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) [2025-02-06 02:24:27,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:24:27,237 INFO L93 Difference]: Finished difference Result 370 states and 662 transitions. [2025-02-06 02:24:27,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 02:24:27,239 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) Word has length 378 [2025-02-06 02:24:27,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:24:27,244 INFO L225 Difference]: With dead ends: 370 [2025-02-06 02:24:27,244 INFO L226 Difference]: Without dead ends: 185 [2025-02-06 02:24:27,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:24:27,248 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:24:27,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 294 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:24:27,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2025-02-06 02:24:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2025-02-06 02:24:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 124 states have (on average 1.4516129032258065) internal successors, (180), 124 states have internal predecessors, (180), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2025-02-06 02:24:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 298 transitions. [2025-02-06 02:24:27,284 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 298 transitions. Word has length 378 [2025-02-06 02:24:27,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:24:27,285 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 298 transitions. [2025-02-06 02:24:27,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) [2025-02-06 02:24:27,285 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 298 transitions. [2025-02-06 02:24:27,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2025-02-06 02:24:27,289 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:24:27,290 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:24:27,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 02:24:27,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-06 02:24:27,491 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:24:27,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:24:27,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1779150860, now seen corresponding path program 1 times [2025-02-06 02:24:27,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:24:27,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243222847] [2025-02-06 02:24:27,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:24:27,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:24:27,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 378 statements into 1 equivalence classes. [2025-02-06 02:24:27,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 378 of 378 statements. [2025-02-06 02:24:27,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:24:27,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:24:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-02-06 02:24:27,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:24:27,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243222847] [2025-02-06 02:24:27,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243222847] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:24:27,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:24:27,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:24:27,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001943417] [2025-02-06 02:24:27,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:24:27,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:24:27,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:24:27,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:24:27,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:24:27,956 INFO L87 Difference]: Start difference. First operand 185 states and 298 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-02-06 02:24:28,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:24:28,112 INFO L93 Difference]: Finished difference Result 543 states and 877 transitions. [2025-02-06 02:24:28,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:24:28,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 378 [2025-02-06 02:24:28,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:24:28,119 INFO L225 Difference]: With dead ends: 543 [2025-02-06 02:24:28,122 INFO L226 Difference]: Without dead ends: 361 [2025-02-06 02:24:28,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:24:28,123 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 270 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:24:28,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 727 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:24:28,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2025-02-06 02:24:28,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 233. [2025-02-06 02:24:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 172 states have (on average 1.505813953488372) internal successors, (259), 172 states have internal predecessors, (259), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2025-02-06 02:24:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 377 transitions. [2025-02-06 02:24:28,156 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 377 transitions. Word has length 378 [2025-02-06 02:24:28,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:24:28,160 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 377 transitions. [2025-02-06 02:24:28,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-02-06 02:24:28,160 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 377 transitions. [2025-02-06 02:24:28,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2025-02-06 02:24:28,167 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:24:28,167 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:24:28,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:24:28,168 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:24:28,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:24:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1805017876, now seen corresponding path program 1 times [2025-02-06 02:24:28,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:24:28,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513064266] [2025-02-06 02:24:28,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:24:28,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:24:28,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-02-06 02:24:28,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-02-06 02:24:28,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:24:28,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:24:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-02-06 02:24:28,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:24:28,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513064266] [2025-02-06 02:24:28,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513064266] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:24:28,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:24:28,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:24:28,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913481484] [2025-02-06 02:24:28,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:24:28,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:24:28,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:24:28,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:24:28,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:24:28,998 INFO L87 Difference]: Start difference. First operand 233 states and 377 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-02-06 02:24:29,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:24:29,097 INFO L93 Difference]: Finished difference Result 689 states and 1117 transitions. [2025-02-06 02:24:29,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:24:29,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 379 [2025-02-06 02:24:29,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:24:29,104 INFO L225 Difference]: With dead ends: 689 [2025-02-06 02:24:29,106 INFO L226 Difference]: Without dead ends: 459 [2025-02-06 02:24:29,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:24:29,108 INFO L435 NwaCegarLoop]: 344 mSDtfsCounter, 166 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:24:29,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 625 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:24:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2025-02-06 02:24:29,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 455. [2025-02-06 02:24:29,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 334 states have (on average 1.4970059880239521) internal successors, (500), 334 states have internal predecessors, (500), 118 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2025-02-06 02:24:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 736 transitions. [2025-02-06 02:24:29,182 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 736 transitions. Word has length 379 [2025-02-06 02:24:29,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:24:29,183 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 736 transitions. [2025-02-06 02:24:29,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-02-06 02:24:29,183 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 736 transitions. [2025-02-06 02:24:29,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2025-02-06 02:24:29,187 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:24:29,188 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:24:29,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:24:29,188 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:24:29,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:24:29,188 INFO L85 PathProgramCache]: Analyzing trace with hash -686326622, now seen corresponding path program 1 times [2025-02-06 02:24:29,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:24:29,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090369213] [2025-02-06 02:24:29,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:24:29,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:24:29,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 380 statements into 1 equivalence classes. [2025-02-06 02:24:29,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 380 of 380 statements. [2025-02-06 02:24:29,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:24:29,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:24:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-02-06 02:24:30,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:24:30,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090369213] [2025-02-06 02:24:30,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090369213] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:24:30,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:24:30,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 02:24:30,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675525968] [2025-02-06 02:24:30,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:24:30,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 02:24:30,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:24:30,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 02:24:30,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 02:24:30,637 INFO L87 Difference]: Start difference. First operand 455 states and 736 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-02-06 02:24:31,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:24:31,834 INFO L93 Difference]: Finished difference Result 1645 states and 2644 transitions. [2025-02-06 02:24:31,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 02:24:31,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 380 [2025-02-06 02:24:31,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:24:31,842 INFO L225 Difference]: With dead ends: 1645 [2025-02-06 02:24:31,842 INFO L226 Difference]: Without dead ends: 1193 [2025-02-06 02:24:31,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 02:24:31,843 INFO L435 NwaCegarLoop]: 293 mSDtfsCounter, 539 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:24:31,844 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 1363 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-06 02:24:31,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2025-02-06 02:24:31,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 805. [2025-02-06 02:24:31,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 666 states have (on average 1.5405405405405406) internal successors, (1026), 670 states have internal predecessors, (1026), 130 states have call successors, (130), 8 states have call predecessors, (130), 8 states have return successors, (130), 126 states have call predecessors, (130), 130 states have call successors, (130) [2025-02-06 02:24:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1286 transitions. [2025-02-06 02:24:31,940 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1286 transitions. Word has length 380 [2025-02-06 02:24:31,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:24:31,940 INFO L471 AbstractCegarLoop]: Abstraction has 805 states and 1286 transitions. [2025-02-06 02:24:31,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-02-06 02:24:31,941 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1286 transitions. [2025-02-06 02:24:31,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2025-02-06 02:24:31,945 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:24:31,945 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:24:31,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 02:24:31,946 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:24:31,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:24:31,946 INFO L85 PathProgramCache]: Analyzing trace with hash 6775075, now seen corresponding path program 1 times [2025-02-06 02:24:31,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:24:31,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871329734] [2025-02-06 02:24:31,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:24:31,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:24:31,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 380 statements into 1 equivalence classes. [2025-02-06 02:24:32,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 380 of 380 statements. [2025-02-06 02:24:32,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:24:32,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:24:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-02-06 02:24:37,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:24:37,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871329734] [2025-02-06 02:24:37,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871329734] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:24:37,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:24:37,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-06 02:24:37,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366510220] [2025-02-06 02:24:37,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:24:37,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 02:24:37,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:24:37,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 02:24:37,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-06 02:24:37,327 INFO L87 Difference]: Start difference. First operand 805 states and 1286 transitions. Second operand has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 2 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2025-02-06 02:24:41,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:24:41,665 INFO L93 Difference]: Finished difference Result 4395 states and 6996 transitions. [2025-02-06 02:24:41,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 02:24:41,666 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 2 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 380 [2025-02-06 02:24:41,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:24:41,685 INFO L225 Difference]: With dead ends: 4395 [2025-02-06 02:24:41,685 INFO L226 Difference]: Without dead ends: 3593 [2025-02-06 02:24:41,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2025-02-06 02:24:41,692 INFO L435 NwaCegarLoop]: 421 mSDtfsCounter, 1762 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:24:41,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 1915 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2025-02-06 02:24:41,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2025-02-06 02:24:41,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 2265. [2025-02-06 02:24:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2265 states, 1928 states have (on average 1.5394190871369295) internal successors, (2968), 1944 states have internal predecessors, (2968), 308 states have call successors, (308), 28 states have call predecessors, (308), 28 states have return successors, (308), 292 states have call predecessors, (308), 308 states have call successors, (308) [2025-02-06 02:24:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2265 states to 2265 states and 3584 transitions. [2025-02-06 02:24:41,858 INFO L78 Accepts]: Start accepts. Automaton has 2265 states and 3584 transitions. Word has length 380 [2025-02-06 02:24:41,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:24:41,858 INFO L471 AbstractCegarLoop]: Abstraction has 2265 states and 3584 transitions. [2025-02-06 02:24:41,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 2 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2025-02-06 02:24:41,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2265 states and 3584 transitions. [2025-02-06 02:24:41,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2025-02-06 02:24:41,868 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:24:41,868 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:24:41,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 02:24:41,869 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:24:41,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:24:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash -322990686, now seen corresponding path program 1 times [2025-02-06 02:24:41,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:24:41,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419761510] [2025-02-06 02:24:41,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:24:41,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:24:41,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 380 statements into 1 equivalence classes. [2025-02-06 02:24:42,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 380 of 380 statements. [2025-02-06 02:24:42,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:24:42,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:24:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 69 proven. 105 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-02-06 02:24:42,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:24:42,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419761510] [2025-02-06 02:24:42,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419761510] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:24:42,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115469779] [2025-02-06 02:24:42,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:24:42,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:24:42,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:24:42,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:24:42,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 02:24:42,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 380 statements into 1 equivalence classes. [2025-02-06 02:24:42,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 380 of 380 statements. [2025-02-06 02:24:42,724 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:24:42,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:24:42,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 02:24:42,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:24:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3174 proven. 60 refuted. 0 times theorem prover too weak. 3610 trivial. 0 not checked. [2025-02-06 02:24:43,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:24:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 114 proven. 60 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-02-06 02:24:43,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115469779] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:24:43,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:24:43,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2025-02-06 02:24:43,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640736284] [2025-02-06 02:24:43,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:24:43,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 02:24:43,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:24:43,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 02:24:43,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 02:24:43,374 INFO L87 Difference]: Start difference. First operand 2265 states and 3584 transitions. Second operand has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 4 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (116), 4 states have call predecessors, (116), 4 states have call successors, (116) [2025-02-06 02:24:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:24:44,972 INFO L93 Difference]: Finished difference Result 5437 states and 8559 transitions. [2025-02-06 02:24:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-06 02:24:44,973 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 4 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (116), 4 states have call predecessors, (116), 4 states have call successors, (116) Word has length 380 [2025-02-06 02:24:44,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:24:44,987 INFO L225 Difference]: With dead ends: 5437 [2025-02-06 02:24:44,988 INFO L226 Difference]: Without dead ends: 3175 [2025-02-06 02:24:44,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=439, Invalid=1283, Unknown=0, NotChecked=0, Total=1722 [2025-02-06 02:24:44,993 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 1110 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:24:44,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 931 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-06 02:24:44,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2025-02-06 02:24:45,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2461. [2025-02-06 02:24:45,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 2068 states have (on average 1.5294970986460348) internal successors, (3163), 2081 states have internal predecessors, (3163), 359 states have call successors, (359), 33 states have call predecessors, (359), 33 states have return successors, (359), 346 states have call predecessors, (359), 359 states have call successors, (359) [2025-02-06 02:24:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 3881 transitions. [2025-02-06 02:24:45,174 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 3881 transitions. Word has length 380 [2025-02-06 02:24:45,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:24:45,175 INFO L471 AbstractCegarLoop]: Abstraction has 2461 states and 3881 transitions. [2025-02-06 02:24:45,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 4 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (116), 4 states have call predecessors, (116), 4 states have call successors, (116) [2025-02-06 02:24:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 3881 transitions. [2025-02-06 02:24:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2025-02-06 02:24:45,180 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:24:45,180 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:24:45,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 02:24:45,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:24:45,385 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:24:45,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:24:45,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1002214137, now seen corresponding path program 1 times [2025-02-06 02:24:45,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:24:45,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486552108] [2025-02-06 02:24:45,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:24:45,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:24:45,404 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 381 statements into 1 equivalence classes. [2025-02-06 02:24:45,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 381 of 381 statements. [2025-02-06 02:24:45,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:24:45,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:24:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-02-06 02:24:48,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:24:48,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486552108] [2025-02-06 02:24:48,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486552108] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:24:48,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:24:48,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 02:24:48,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776524518] [2025-02-06 02:24:48,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:24:48,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 02:24:48,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:24:48,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 02:24:48,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-06 02:24:48,728 INFO L87 Difference]: Start difference. First operand 2461 states and 3881 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 2 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2025-02-06 02:24:51,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:24:51,550 INFO L93 Difference]: Finished difference Result 5815 states and 9221 transitions. [2025-02-06 02:24:51,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 02:24:51,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 2 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 381 [2025-02-06 02:24:51,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:24:51,571 INFO L225 Difference]: With dead ends: 5815 [2025-02-06 02:24:51,577 INFO L226 Difference]: Without dead ends: 3472 [2025-02-06 02:24:51,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-02-06 02:24:51,587 INFO L435 NwaCegarLoop]: 430 mSDtfsCounter, 907 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:24:51,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 2094 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-02-06 02:24:51,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2025-02-06 02:24:51,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 2823. [2025-02-06 02:24:51,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2430 states have (on average 1.5436213991769547) internal successors, (3751), 2443 states have internal predecessors, (3751), 359 states have call successors, (359), 33 states have call predecessors, (359), 33 states have return successors, (359), 346 states have call predecessors, (359), 359 states have call successors, (359) [2025-02-06 02:24:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 4469 transitions. [2025-02-06 02:24:51,809 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 4469 transitions. Word has length 381 [2025-02-06 02:24:51,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:24:51,811 INFO L471 AbstractCegarLoop]: Abstraction has 2823 states and 4469 transitions. [2025-02-06 02:24:51,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 2 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2025-02-06 02:24:51,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 4469 transitions. [2025-02-06 02:24:51,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2025-02-06 02:24:51,818 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:24:51,818 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:24:51,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 02:24:51,819 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:24:51,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:24:51,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1659949160, now seen corresponding path program 1 times [2025-02-06 02:24:51,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:24:51,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90220093] [2025-02-06 02:24:51,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:24:51,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:24:51,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 381 statements into 1 equivalence classes. [2025-02-06 02:24:52,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 381 of 381 statements. [2025-02-06 02:24:52,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:24:52,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:24:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 69 proven. 105 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-02-06 02:24:52,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:24:52,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90220093] [2025-02-06 02:24:52,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90220093] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:24:52,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623717513] [2025-02-06 02:24:52,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:24:52,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:24:52,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:24:52,527 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:24:52,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 02:24:52,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 381 statements into 1 equivalence classes. [2025-02-06 02:24:52,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 381 of 381 statements. [2025-02-06 02:24:52,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:24:52,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:24:52,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 02:24:52,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:24:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 4013 proven. 210 refuted. 0 times theorem prover too weak. 2621 trivial. 0 not checked. [2025-02-06 02:24:54,622 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:24:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 132 proven. 213 refuted. 0 times theorem prover too weak. 6499 trivial. 0 not checked. [2025-02-06 02:24:55,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623717513] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:24:55,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:24:55,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 12] total 27 [2025-02-06 02:24:55,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838154751] [2025-02-06 02:24:55,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:24:55,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-06 02:24:55,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:24:55,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-06 02:24:55,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2025-02-06 02:24:55,639 INFO L87 Difference]: Start difference. First operand 2823 states and 4469 transitions. Second operand has 27 states, 27 states have (on average 9.0) internal successors, (243), 27 states have internal predecessors, (243), 8 states have call successors, (177), 4 states have call predecessors, (177), 9 states have return successors, (177), 8 states have call predecessors, (177), 8 states have call successors, (177) [2025-02-06 02:25:01,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:25:01,285 INFO L93 Difference]: Finished difference Result 6422 states and 10035 transitions. [2025-02-06 02:25:01,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2025-02-06 02:25:01,286 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.0) internal successors, (243), 27 states have internal predecessors, (243), 8 states have call successors, (177), 4 states have call predecessors, (177), 9 states have return successors, (177), 8 states have call predecessors, (177), 8 states have call successors, (177) Word has length 381 [2025-02-06 02:25:01,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:25:01,298 INFO L225 Difference]: With dead ends: 6422 [2025-02-06 02:25:01,298 INFO L226 Difference]: Without dead ends: 3717 [2025-02-06 02:25:01,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 755 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4860 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2464, Invalid=10418, Unknown=0, NotChecked=0, Total=12882 [2025-02-06 02:25:01,304 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 4410 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 3719 mSolverCounterSat, 2662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4412 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 6381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2662 IncrementalHoareTripleChecker+Valid, 3719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-02-06 02:25:01,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4412 Valid, 3385 Invalid, 6381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2662 Valid, 3719 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-02-06 02:25:01,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3717 states. [2025-02-06 02:25:01,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3717 to 2375. [2025-02-06 02:25:01,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 1897 states have (on average 1.4275171323141802) internal successors, (2708), 1911 states have internal predecessors, (2708), 428 states have call successors, (428), 49 states have call predecessors, (428), 49 states have return successors, (428), 414 states have call predecessors, (428), 428 states have call successors, (428) [2025-02-06 02:25:01,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3564 transitions. [2025-02-06 02:25:01,525 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3564 transitions. Word has length 381 [2025-02-06 02:25:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:25:01,526 INFO L471 AbstractCegarLoop]: Abstraction has 2375 states and 3564 transitions. [2025-02-06 02:25:01,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.0) internal successors, (243), 27 states have internal predecessors, (243), 8 states have call successors, (177), 4 states have call predecessors, (177), 9 states have return successors, (177), 8 states have call predecessors, (177), 8 states have call successors, (177) [2025-02-06 02:25:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3564 transitions. [2025-02-06 02:25:01,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2025-02-06 02:25:01,536 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:25:01,537 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:25:01,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 02:25:01,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:25:01,738 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:25:01,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:25:01,738 INFO L85 PathProgramCache]: Analyzing trace with hash 653880860, now seen corresponding path program 1 times [2025-02-06 02:25:01,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:25:01,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273766846] [2025-02-06 02:25:01,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:25:01,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:25:01,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 382 statements into 1 equivalence classes. [2025-02-06 02:25:01,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 382 of 382 statements. [2025-02-06 02:25:01,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:25:01,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:25:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-02-06 02:25:02,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:25:02,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273766846] [2025-02-06 02:25:02,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273766846] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:25:02,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:25:02,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:25:02,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966699395] [2025-02-06 02:25:02,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:25:02,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:25:02,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:25:02,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:25:02,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:25:02,003 INFO L87 Difference]: Start difference. First operand 2375 states and 3564 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-02-06 02:25:02,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:25:02,281 INFO L93 Difference]: Finished difference Result 5327 states and 8008 transitions. [2025-02-06 02:25:02,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:25:02,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 382 [2025-02-06 02:25:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:25:02,312 INFO L225 Difference]: With dead ends: 5327 [2025-02-06 02:25:02,313 INFO L226 Difference]: Without dead ends: 3327 [2025-02-06 02:25:02,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:25:02,320 INFO L435 NwaCegarLoop]: 369 mSDtfsCounter, 158 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:25:02,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 647 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:25:02,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2025-02-06 02:25:02,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 3325. [2025-02-06 02:25:02,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3325 states, 2581 states have (on average 1.397907787679194) internal successors, (3608), 2601 states have internal predecessors, (3608), 672 states have call successors, (672), 71 states have call predecessors, (672), 71 states have return successors, (672), 652 states have call predecessors, (672), 672 states have call successors, (672) [2025-02-06 02:25:02,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 4952 transitions. [2025-02-06 02:25:02,692 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 4952 transitions. Word has length 382 [2025-02-06 02:25:02,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:25:02,693 INFO L471 AbstractCegarLoop]: Abstraction has 3325 states and 4952 transitions. [2025-02-06 02:25:02,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-02-06 02:25:02,693 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 4952 transitions. [2025-02-06 02:25:02,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2025-02-06 02:25:02,699 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:25:02,700 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:25:02,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 02:25:02,700 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:25:02,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:25:02,703 INFO L85 PathProgramCache]: Analyzing trace with hash -510544545, now seen corresponding path program 1 times [2025-02-06 02:25:02,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:25:02,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310481264] [2025-02-06 02:25:02,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:25:02,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:25:02,720 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-02-06 02:25:02,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-02-06 02:25:02,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:25:02,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:25:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-02-06 02:25:03,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:25:03,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310481264] [2025-02-06 02:25:03,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310481264] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:25:03,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:25:03,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:25:03,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670040520] [2025-02-06 02:25:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:25:03,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:25:03,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:25:03,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:25:03,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:25:03,189 INFO L87 Difference]: Start difference. First operand 3325 states and 4952 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-02-06 02:25:03,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:25:03,736 INFO L93 Difference]: Finished difference Result 7984 states and 11913 transitions. [2025-02-06 02:25:03,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:25:03,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 383 [2025-02-06 02:25:03,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:25:03,755 INFO L225 Difference]: With dead ends: 7984 [2025-02-06 02:25:03,758 INFO L226 Difference]: Without dead ends: 6002 [2025-02-06 02:25:03,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:25:03,762 INFO L435 NwaCegarLoop]: 285 mSDtfsCounter, 302 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:25:03,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 807 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:25:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2025-02-06 02:25:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 5816. [2025-02-06 02:25:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5816 states, 4771 states have (on average 1.4175225319639488) internal successors, (6763), 4815 states have internal predecessors, (6763), 936 states have call successors, (936), 108 states have call predecessors, (936), 108 states have return successors, (936), 892 states have call predecessors, (936), 936 states have call successors, (936) [2025-02-06 02:25:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5816 states to 5816 states and 8635 transitions. [2025-02-06 02:25:04,306 INFO L78 Accepts]: Start accepts. Automaton has 5816 states and 8635 transitions. Word has length 383 [2025-02-06 02:25:04,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:25:04,307 INFO L471 AbstractCegarLoop]: Abstraction has 5816 states and 8635 transitions. [2025-02-06 02:25:04,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-02-06 02:25:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 5816 states and 8635 transitions. [2025-02-06 02:25:04,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2025-02-06 02:25:04,312 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:25:04,312 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:25:04,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 02:25:04,313 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:25:04,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:25:04,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1314614136, now seen corresponding path program 1 times [2025-02-06 02:25:04,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:25:04,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038321420] [2025-02-06 02:25:04,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:25:04,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:25:04,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 384 statements into 1 equivalence classes. [2025-02-06 02:25:04,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 384 of 384 statements. [2025-02-06 02:25:04,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:25:04,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:25:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 75 proven. 99 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-02-06 02:25:04,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:25:04,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038321420] [2025-02-06 02:25:04,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038321420] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:25:04,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298065018] [2025-02-06 02:25:04,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:25:04,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:25:04,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:25:04,714 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:25:04,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 02:25:04,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 384 statements into 1 equivalence classes. [2025-02-06 02:25:04,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 384 of 384 statements. [2025-02-06 02:25:04,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:25:04,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:25:04,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 02:25:04,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:25:05,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3018 proven. 54 refuted. 0 times theorem prover too weak. 3772 trivial. 0 not checked. [2025-02-06 02:25:05,150 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:25:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 120 proven. 54 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-02-06 02:25:05,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298065018] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:25:05,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:25:05,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2025-02-06 02:25:05,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308209685] [2025-02-06 02:25:05,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:25:05,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 02:25:05,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:25:05,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 02:25:05,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-02-06 02:25:05,423 INFO L87 Difference]: Start difference. First operand 5816 states and 8635 transitions. Second operand has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 4 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) [2025-02-06 02:25:06,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:25:06,947 INFO L93 Difference]: Finished difference Result 13245 states and 19465 transitions. [2025-02-06 02:25:06,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 02:25:06,948 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 4 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) Word has length 384 [2025-02-06 02:25:06,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:25:06,984 INFO L225 Difference]: With dead ends: 13245 [2025-02-06 02:25:06,984 INFO L226 Difference]: Without dead ends: 8079 [2025-02-06 02:25:06,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2025-02-06 02:25:06,997 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 1130 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 02:25:06,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 682 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 02:25:07,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8079 states. [2025-02-06 02:25:07,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8079 to 6812. [2025-02-06 02:25:07,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6812 states, 5436 states have (on average 1.3774834437086092) internal successors, (7488), 5488 states have internal predecessors, (7488), 1224 states have call successors, (1224), 151 states have call predecessors, (1224), 151 states have return successors, (1224), 1172 states have call predecessors, (1224), 1224 states have call successors, (1224) [2025-02-06 02:25:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6812 states to 6812 states and 9936 transitions. [2025-02-06 02:25:07,571 INFO L78 Accepts]: Start accepts. Automaton has 6812 states and 9936 transitions. Word has length 384 [2025-02-06 02:25:07,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:25:07,571 INFO L471 AbstractCegarLoop]: Abstraction has 6812 states and 9936 transitions. [2025-02-06 02:25:07,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.454545454545453) internal successors, (203), 11 states have internal predecessors, (203), 4 states have call successors, (110), 2 states have call predecessors, (110), 4 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) [2025-02-06 02:25:07,572 INFO L276 IsEmpty]: Start isEmpty. Operand 6812 states and 9936 transitions. [2025-02-06 02:25:07,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2025-02-06 02:25:07,577 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:25:07,577 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:25:07,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 02:25:07,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-06 02:25:07,781 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:25:07,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:25:07,781 INFO L85 PathProgramCache]: Analyzing trace with hash 546204867, now seen corresponding path program 1 times [2025-02-06 02:25:07,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:25:07,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391922282] [2025-02-06 02:25:07,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:25:07,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:25:07,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 385 statements into 1 equivalence classes. [2025-02-06 02:25:07,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 385 of 385 statements. [2025-02-06 02:25:07,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:25:07,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:25:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-02-06 02:25:08,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:25:08,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391922282] [2025-02-06 02:25:08,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391922282] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:25:08,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:25:08,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 02:25:08,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801413893] [2025-02-06 02:25:08,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:25:08,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 02:25:08,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:25:08,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 02:25:08,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:25:08,265 INFO L87 Difference]: Start difference. First operand 6812 states and 9936 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-02-06 02:25:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:25:08,915 INFO L93 Difference]: Finished difference Result 11278 states and 16487 transitions. [2025-02-06 02:25:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 02:25:08,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 385 [2025-02-06 02:25:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:25:08,956 INFO L225 Difference]: With dead ends: 11278 [2025-02-06 02:25:08,960 INFO L226 Difference]: Without dead ends: 7062 [2025-02-06 02:25:08,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:25:08,969 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 319 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:25:08,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 900 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:25:08,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7062 states. [2025-02-06 02:25:09,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7062 to 6812. [2025-02-06 02:25:09,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6812 states, 5436 states have (on average 1.3756438557763062) internal successors, (7478), 5488 states have internal predecessors, (7478), 1224 states have call successors, (1224), 151 states have call predecessors, (1224), 151 states have return successors, (1224), 1172 states have call predecessors, (1224), 1224 states have call successors, (1224) [2025-02-06 02:25:09,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6812 states to 6812 states and 9926 transitions. [2025-02-06 02:25:09,614 INFO L78 Accepts]: Start accepts. Automaton has 6812 states and 9926 transitions. Word has length 385 [2025-02-06 02:25:09,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:25:09,615 INFO L471 AbstractCegarLoop]: Abstraction has 6812 states and 9926 transitions. [2025-02-06 02:25:09,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-02-06 02:25:09,615 INFO L276 IsEmpty]: Start isEmpty. Operand 6812 states and 9926 transitions. [2025-02-06 02:25:09,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2025-02-06 02:25:09,619 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:25:09,619 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:25:09,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 02:25:09,620 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:25:09,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:25:09,620 INFO L85 PathProgramCache]: Analyzing trace with hash 849288373, now seen corresponding path program 1 times [2025-02-06 02:25:09,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:25:09,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95327800] [2025-02-06 02:25:09,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:25:09,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:25:09,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-02-06 02:25:09,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-02-06 02:25:09,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:25:09,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:25:10,132 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 114 proven. 60 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-02-06 02:25:10,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:25:10,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95327800] [2025-02-06 02:25:10,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95327800] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:25:10,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327039942] [2025-02-06 02:25:10,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:25:10,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:25:10,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:25:10,136 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:25:10,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 02:25:10,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-02-06 02:25:10,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-02-06 02:25:10,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:25:10,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:25:10,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 02:25:10,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:25:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2928 proven. 51 refuted. 0 times theorem prover too weak. 3865 trivial. 0 not checked. [2025-02-06 02:25:10,897 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:25:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 123 proven. 51 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-02-06 02:25:11,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327039942] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:25:11,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:25:11,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 6] total 17 [2025-02-06 02:25:11,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699655755] [2025-02-06 02:25:11,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:25:11,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 02:25:11,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:25:11,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 02:25:11,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2025-02-06 02:25:11,295 INFO L87 Difference]: Start difference. First operand 6812 states and 9926 transitions. Second operand has 17 states, 17 states have (on average 14.647058823529411) internal successors, (249), 17 states have internal predecessors, (249), 6 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) [2025-02-06 02:25:17,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:25:17,979 INFO L93 Difference]: Finished difference Result 51754 states and 75203 transitions. [2025-02-06 02:25:17,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2025-02-06 02:25:17,980 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.647058823529411) internal successors, (249), 17 states have internal predecessors, (249), 6 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) Word has length 386 [2025-02-06 02:25:17,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:25:18,123 INFO L225 Difference]: With dead ends: 51754 [2025-02-06 02:25:18,123 INFO L226 Difference]: Without dead ends: 45428 [2025-02-06 02:25:18,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 777 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2101 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1234, Invalid=4618, Unknown=0, NotChecked=0, Total=5852 [2025-02-06 02:25:18,148 INFO L435 NwaCegarLoop]: 298 mSDtfsCounter, 5058 mSDsluCounter, 3173 mSDsCounter, 0 mSdLazyCounter, 2874 mSolverCounterSat, 1697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 4571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1697 IncrementalHoareTripleChecker+Valid, 2874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-02-06 02:25:18,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5195 Valid, 3471 Invalid, 4571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1697 Valid, 2874 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-02-06 02:25:18,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45428 states. [2025-02-06 02:25:21,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45428 to 30420. [2025-02-06 02:25:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30420 states, 24362 states have (on average 1.3696740825876366) internal successors, (33368), 24626 states have internal predecessors, (33368), 5369 states have call successors, (5369), 688 states have call predecessors, (5369), 688 states have return successors, (5369), 5105 states have call predecessors, (5369), 5369 states have call successors, (5369) [2025-02-06 02:25:21,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30420 states to 30420 states and 44106 transitions. [2025-02-06 02:25:21,548 INFO L78 Accepts]: Start accepts. Automaton has 30420 states and 44106 transitions. Word has length 386 [2025-02-06 02:25:21,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:25:21,548 INFO L471 AbstractCegarLoop]: Abstraction has 30420 states and 44106 transitions. [2025-02-06 02:25:21,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.647058823529411) internal successors, (249), 17 states have internal predecessors, (249), 6 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) [2025-02-06 02:25:21,549 INFO L276 IsEmpty]: Start isEmpty. Operand 30420 states and 44106 transitions. [2025-02-06 02:25:21,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2025-02-06 02:25:21,562 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:25:21,562 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:25:21,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 02:25:21,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-06 02:25:21,765 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:25:21,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:25:21,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1163627383, now seen corresponding path program 1 times [2025-02-06 02:25:21,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:25:21,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299120486] [2025-02-06 02:25:21,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:25:21,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:25:21,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-02-06 02:25:21,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-02-06 02:25:21,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:25:21,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:25:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 6 proven. 168 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-02-06 02:25:22,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:25:22,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299120486] [2025-02-06 02:25:22,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299120486] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:25:22,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123185600] [2025-02-06 02:25:22,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:25:22,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:25:22,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:25:22,736 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:25:22,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 02:25:22,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-02-06 02:25:22,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-02-06 02:25:22,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:25:22,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:25:22,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 02:25:23,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:25:24,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 568 proven. 330 refuted. 0 times theorem prover too weak. 5946 trivial. 0 not checked. [2025-02-06 02:25:24,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:25:24,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 6 proven. 168 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-02-06 02:25:24,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123185600] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:25:24,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:25:24,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 17 [2025-02-06 02:25:24,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980398791] [2025-02-06 02:25:24,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:25:24,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 02:25:24,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:25:24,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 02:25:24,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2025-02-06 02:25:24,546 INFO L87 Difference]: Start difference. First operand 30420 states and 44106 transitions. Second operand has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 17 states have internal predecessors, (246), 4 states have call successors, (171), 3 states have call predecessors, (171), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2025-02-06 02:25:30,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:25:30,456 INFO L93 Difference]: Finished difference Result 75385 states and 105267 transitions. [2025-02-06 02:25:30,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-06 02:25:30,457 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 17 states have internal predecessors, (246), 4 states have call successors, (171), 3 states have call predecessors, (171), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) Word has length 386 [2025-02-06 02:25:30,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:25:30,564 INFO L225 Difference]: With dead ends: 75385 [2025-02-06 02:25:30,565 INFO L226 Difference]: Without dead ends: 46165 [2025-02-06 02:25:30,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 768 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=1129, Unknown=0, NotChecked=0, Total=1482 [2025-02-06 02:25:30,610 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 880 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:25:30,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 2286 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-06 02:25:30,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46165 states. [2025-02-06 02:25:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46165 to 32676. [2025-02-06 02:25:34,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32676 states, 26533 states have (on average 1.36822070629028) internal successors, (36303), 26773 states have internal predecessors, (36303), 5177 states have call successors, (5177), 965 states have call predecessors, (5177), 965 states have return successors, (5177), 4937 states have call predecessors, (5177), 5177 states have call successors, (5177) [2025-02-06 02:25:34,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32676 states to 32676 states and 46657 transitions. [2025-02-06 02:25:34,339 INFO L78 Accepts]: Start accepts. Automaton has 32676 states and 46657 transitions. Word has length 386 [2025-02-06 02:25:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:25:34,339 INFO L471 AbstractCegarLoop]: Abstraction has 32676 states and 46657 transitions. [2025-02-06 02:25:34,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 17 states have internal predecessors, (246), 4 states have call successors, (171), 3 states have call predecessors, (171), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2025-02-06 02:25:34,340 INFO L276 IsEmpty]: Start isEmpty. Operand 32676 states and 46657 transitions. [2025-02-06 02:25:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2025-02-06 02:25:34,351 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:25:34,351 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 02:25:34,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 02:25:34,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-06 02:25:34,552 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:25:34,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:25:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash -2105847914, now seen corresponding path program 1 times [2025-02-06 02:25:34,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:25:34,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182119328] [2025-02-06 02:25:34,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:25:34,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:25:34,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-02-06 02:25:34,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-02-06 02:25:34,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:25:34,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 02:25:34,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968645397] [2025-02-06 02:25:34,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:25:34,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:25:34,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:25:34,789 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 02:25:34,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 02:25:34,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-02-06 02:25:35,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-02-06 02:25:35,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:25:35,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:25:35,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-06 02:25:35,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:25:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2656 proven. 294 refuted. 0 times theorem prover too weak. 3894 trivial. 0 not checked. [2025-02-06 02:25:38,573 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:25:39,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:25:39,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182119328] [2025-02-06 02:25:39,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 02:25:39,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968645397] [2025-02-06 02:25:39,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968645397] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:25:39,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:25:39,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2025-02-06 02:25:39,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478884671] [2025-02-06 02:25:39,732 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 02:25:39,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 02:25:39,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:25:39,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 02:25:39,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2025-02-06 02:25:39,733 INFO L87 Difference]: Start difference. First operand 32676 states and 46657 transitions. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 10 states have internal predecessors, (106), 3 states have call successors, (59), 3 states have call predecessors, (59), 5 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2025-02-06 02:25:43,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:25:43,330 INFO L93 Difference]: Finished difference Result 73083 states and 104646 transitions. [2025-02-06 02:25:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 02:25:43,331 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 10 states have internal predecessors, (106), 3 states have call successors, (59), 3 states have call predecessors, (59), 5 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 386 [2025-02-06 02:25:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:25:43,424 INFO L225 Difference]: With dead ends: 73083 [2025-02-06 02:25:43,424 INFO L226 Difference]: Without dead ends: 40570 [2025-02-06 02:25:43,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2025-02-06 02:25:43,463 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 353 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 02:25:43,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1488 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 02:25:43,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40570 states.