./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.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-29.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 e794586f9f3740a193d413dfe816851463e703edc20a79bd19788c3a0505333b --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:15:55,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:15:55,495 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:15:55,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:15:55,504 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:15:55,523 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:15:55,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:15:55,524 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:15:55,524 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:15:55,524 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:15:55,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:15:55,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:15:55,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:15:55,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:15:55,525 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:15:55,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:15:55,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:15:55,526 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:15:55,526 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:15:55,526 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:15:55,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:15:55,526 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:15:55,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:15:55,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:15:55,526 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:15:55,526 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:15:55,527 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:15:55,527 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:15:55,527 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:15:55,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:15:55,527 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:15:55,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:15:55,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:15:55,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:15:55,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:15:55,528 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:15:55,528 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:15:55,528 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:15:55,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:15:55,528 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:15:55,528 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:15:55,528 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:15:55,528 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:15:55,528 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 -> e794586f9f3740a193d413dfe816851463e703edc20a79bd19788c3a0505333b [2025-02-06 02:15:55,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:15:55,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:15:55,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:15:55,756 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:15:55,756 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:15:55,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.i [2025-02-06 02:15:56,928 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f886072f/e736b4b2bee647cc9b391968585f796e/FLAGc5b9ce4e8 [2025-02-06 02:15:57,267 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:15:57,270 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-29.i [2025-02-06 02:15:57,281 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f886072f/e736b4b2bee647cc9b391968585f796e/FLAGc5b9ce4e8 [2025-02-06 02:15:57,295 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9f886072f/e736b4b2bee647cc9b391968585f796e [2025-02-06 02:15:57,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:15:57,300 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:15:57,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:15:57,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:15:57,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:15:57,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:15:57" (1/1) ... [2025-02-06 02:15:57,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51eca627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57, skipping insertion in model container [2025-02-06 02:15:57,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:15:57" (1/1) ... [2025-02-06 02:15:57,328 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:15:57,422 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-29.i[916,929] [2025-02-06 02:15:57,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:15:57,544 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:15:57,553 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-29.i[916,929] [2025-02-06 02:15:57,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:15:57,616 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:15:57,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57 WrapperNode [2025-02-06 02:15:57,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:15:57,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:15:57,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:15:57,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:15:57,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57" (1/1) ... [2025-02-06 02:15:57,632 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57" (1/1) ... [2025-02-06 02:15:57,672 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 416 [2025-02-06 02:15:57,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:15:57,673 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:15:57,673 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:15:57,673 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:15:57,680 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57" (1/1) ... [2025-02-06 02:15:57,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57" (1/1) ... [2025-02-06 02:15:57,684 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57" (1/1) ... [2025-02-06 02:15:57,706 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 02:15:57,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57" (1/1) ... [2025-02-06 02:15:57,706 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57" (1/1) ... [2025-02-06 02:15:57,717 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57" (1/1) ... [2025-02-06 02:15:57,723 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57" (1/1) ... [2025-02-06 02:15:57,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57" (1/1) ... [2025-02-06 02:15:57,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57" (1/1) ... [2025-02-06 02:15:57,739 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:15:57,741 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:15:57,742 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:15:57,742 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:15:57,743 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57" (1/1) ... [2025-02-06 02:15:57,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:15:57,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:15:57,777 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 02:15:57,780 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 02:15:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:15:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:15:57,800 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:15:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:15:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:15:57,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:15:57,878 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:15:57,880 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:15:58,520 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L373: havoc property_#t~bitwise37#1;havoc property_#t~short38#1;havoc property_#t~bitwise39#1;havoc property_#t~short40#1; [2025-02-06 02:15:58,585 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2025-02-06 02:15:58,585 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:15:58,603 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:15:58,604 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 02:15:58,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:15:58 BoogieIcfgContainer [2025-02-06 02:15:58,604 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:15:58,605 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:15:58,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:15:58,608 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:15:58,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:15:57" (1/3) ... [2025-02-06 02:15:58,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cd899e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:15:58, skipping insertion in model container [2025-02-06 02:15:58,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:15:57" (2/3) ... [2025-02-06 02:15:58,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9cd899e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:15:58, skipping insertion in model container [2025-02-06 02:15:58,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:15:58" (3/3) ... [2025-02-06 02:15:58,612 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-29.i [2025-02-06 02:15:58,621 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:15:58,625 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-29.i that has 2 procedures, 178 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:15:58,675 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:15:58,685 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;@2adc4c3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:15:58,687 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:15:58,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 120 states have (on average 1.4666666666666666) internal successors, (176), 121 states have internal predecessors, (176), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2025-02-06 02:15:58,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-02-06 02:15:58,706 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:58,706 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:58,707 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:58,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:58,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1276393586, now seen corresponding path program 1 times [2025-02-06 02:15:58,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:58,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137648148] [2025-02-06 02:15:58,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:58,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:15:58,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-02-06 02:15:58,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-02-06 02:15:58,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:58,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2025-02-06 02:15:59,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:15:59,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137648148] [2025-02-06 02:15:59,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137648148] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:15:59,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958288241] [2025-02-06 02:15:59,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:59,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:15:59,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:15:59,264 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 02:15:59,273 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 02:15:59,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-02-06 02:15:59,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-02-06 02:15:59,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:15:59,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:15:59,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 02:15:59,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:15:59,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 5832 trivial. 0 not checked. [2025-02-06 02:15:59,606 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:15:59,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958288241] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:15:59,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:15:59,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 02:15:59,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964620680] [2025-02-06 02:15:59,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:15:59,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 02:15:59,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:15:59,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 02:15:59,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:15:59,632 INFO L87 Difference]: Start difference. First operand has 178 states, 120 states have (on average 1.4666666666666666) internal successors, (176), 121 states have internal predecessors, (176), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) [2025-02-06 02:15:59,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:15:59,670 INFO L93 Difference]: Finished difference Result 350 states and 622 transitions. [2025-02-06 02:15:59,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 02:15:59,673 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) Word has length 360 [2025-02-06 02:15:59,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:15:59,680 INFO L225 Difference]: With dead ends: 350 [2025-02-06 02:15:59,681 INFO L226 Difference]: Without dead ends: 175 [2025-02-06 02:15:59,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 361 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 02:15:59,685 INFO L435 NwaCegarLoop]: 277 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, 277 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 02:15:59,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:15:59,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-02-06 02:15:59,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2025-02-06 02:15:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 118 states have (on average 1.4491525423728813) internal successors, (171), 118 states have internal predecessors, (171), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2025-02-06 02:15:59,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 281 transitions. [2025-02-06 02:15:59,728 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 281 transitions. Word has length 360 [2025-02-06 02:15:59,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:15:59,728 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 281 transitions. [2025-02-06 02:15:59,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 2 states have call successors, (55) [2025-02-06 02:15:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 281 transitions. [2025-02-06 02:15:59,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-02-06 02:15:59,737 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:15:59,737 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:59,745 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 02:15:59,938 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 02:15:59,938 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:15:59,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:15:59,939 INFO L85 PathProgramCache]: Analyzing trace with hash -817418795, now seen corresponding path program 1 times [2025-02-06 02:15:59,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:15:59,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152062102] [2025-02-06 02:15:59,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:15:59,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:00,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-02-06 02:16:00,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-02-06 02:16:00,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:00,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2025-02-06 02:16:00,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:00,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152062102] [2025-02-06 02:16:00,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152062102] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:00,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:00,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:16:00,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953558179] [2025-02-06 02:16:00,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:00,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:16:00,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:00,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:16:00,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:16:00,437 INFO L87 Difference]: Start difference. First operand 175 states and 281 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-02-06 02:16:00,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:00,522 INFO L93 Difference]: Finished difference Result 422 states and 675 transitions. [2025-02-06 02:16:00,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:16:00,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 360 [2025-02-06 02:16:00,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:00,529 INFO L225 Difference]: With dead ends: 422 [2025-02-06 02:16:00,530 INFO L226 Difference]: Without dead ends: 250 [2025-02-06 02:16:00,531 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 02:16:00,533 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 103 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:00,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 615 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:16:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2025-02-06 02:16:00,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 247. [2025-02-06 02:16:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 187 states have (on average 1.4973262032085561) internal successors, (280), 188 states have internal predecessors, (280), 57 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2025-02-06 02:16:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 394 transitions. [2025-02-06 02:16:00,569 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 394 transitions. Word has length 360 [2025-02-06 02:16:00,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:00,571 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 394 transitions. [2025-02-06 02:16:00,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-02-06 02:16:00,572 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 394 transitions. [2025-02-06 02:16:00,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-02-06 02:16:00,578 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:00,578 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:00,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:16:00,579 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:00,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:00,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1541888214, now seen corresponding path program 1 times [2025-02-06 02:16:00,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:00,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967676787] [2025-02-06 02:16:00,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:00,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:00,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-02-06 02:16:00,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-02-06 02:16:00,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:00,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2025-02-06 02:16:01,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:01,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967676787] [2025-02-06 02:16:01,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967676787] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:01,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:01,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:16:01,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389336477] [2025-02-06 02:16:01,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:01,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:16:01,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:01,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:16:01,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:16:01,138 INFO L87 Difference]: Start difference. First operand 247 states and 394 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-02-06 02:16:01,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:01,231 INFO L93 Difference]: Finished difference Result 735 states and 1176 transitions. [2025-02-06 02:16:01,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:16:01,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 360 [2025-02-06 02:16:01,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:01,239 INFO L225 Difference]: With dead ends: 735 [2025-02-06 02:16:01,240 INFO L226 Difference]: Without dead ends: 491 [2025-02-06 02:16:01,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:16:01,242 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 175 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:01,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 800 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:16:01,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2025-02-06 02:16:01,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 489. [2025-02-06 02:16:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 370 states have (on average 1.4972972972972973) internal successors, (554), 372 states have internal predecessors, (554), 114 states have call successors, (114), 4 states have call predecessors, (114), 4 states have return successors, (114), 112 states have call predecessors, (114), 114 states have call successors, (114) [2025-02-06 02:16:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 782 transitions. [2025-02-06 02:16:01,332 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 782 transitions. Word has length 360 [2025-02-06 02:16:01,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:01,332 INFO L471 AbstractCegarLoop]: Abstraction has 489 states and 782 transitions. [2025-02-06 02:16:01,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-02-06 02:16:01,333 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 782 transitions. [2025-02-06 02:16:01,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-02-06 02:16:01,336 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:01,336 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:01,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:16:01,336 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:01,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:01,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1027598185, now seen corresponding path program 1 times [2025-02-06 02:16:01,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:01,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483478983] [2025-02-06 02:16:01,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:01,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:01,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-02-06 02:16:01,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-02-06 02:16:01,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:01,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2025-02-06 02:16:01,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:01,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483478983] [2025-02-06 02:16:01,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483478983] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:01,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:01,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 02:16:01,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758739610] [2025-02-06 02:16:01,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:01,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 02:16:01,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:01,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 02:16:01,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 02:16:01,766 INFO L87 Difference]: Start difference. First operand 489 states and 782 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2025-02-06 02:16:02,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:02,193 INFO L93 Difference]: Finished difference Result 1465 states and 2348 transitions. [2025-02-06 02:16:02,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 02:16:02,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 360 [2025-02-06 02:16:02,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:02,203 INFO L225 Difference]: With dead ends: 1465 [2025-02-06 02:16:02,203 INFO L226 Difference]: Without dead ends: 979 [2025-02-06 02:16:02,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-02-06 02:16:02,205 INFO L435 NwaCegarLoop]: 246 mSDtfsCounter, 285 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:02,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 890 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 02:16:02,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2025-02-06 02:16:02,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 977. [2025-02-06 02:16:02,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 740 states have (on average 1.4972972972972973) internal successors, (1108), 744 states have internal predecessors, (1108), 228 states have call successors, (228), 8 states have call predecessors, (228), 8 states have return successors, (228), 224 states have call predecessors, (228), 228 states have call successors, (228) [2025-02-06 02:16:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1564 transitions. [2025-02-06 02:16:02,307 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1564 transitions. Word has length 360 [2025-02-06 02:16:02,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:02,308 INFO L471 AbstractCegarLoop]: Abstraction has 977 states and 1564 transitions. [2025-02-06 02:16:02,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 2 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2025-02-06 02:16:02,308 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1564 transitions. [2025-02-06 02:16:02,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-02-06 02:16:02,313 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:02,313 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:02,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 02:16:02,313 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:02,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:02,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1190159768, now seen corresponding path program 1 times [2025-02-06 02:16:02,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:02,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102837968] [2025-02-06 02:16:02,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:02,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:02,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-02-06 02:16:02,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-02-06 02:16:02,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:02,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2025-02-06 02:16:03,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:03,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102837968] [2025-02-06 02:16:03,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102837968] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:03,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:03,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 02:16:03,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634331010] [2025-02-06 02:16:03,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:03,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 02:16:03,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:03,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 02:16:03,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:16:03,653 INFO L87 Difference]: Start difference. First operand 977 states and 1564 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-02-06 02:16:04,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:04,590 INFO L93 Difference]: Finished difference Result 3739 states and 5971 transitions. [2025-02-06 02:16:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 02:16:04,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 360 [2025-02-06 02:16:04,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:04,606 INFO L225 Difference]: With dead ends: 3739 [2025-02-06 02:16:04,606 INFO L226 Difference]: Without dead ends: 2765 [2025-02-06 02:16:04,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 02:16:04,610 INFO L435 NwaCegarLoop]: 284 mSDtfsCounter, 319 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:04,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 825 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 02:16:04,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2025-02-06 02:16:04,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2277. [2025-02-06 02:16:04,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1804 states have (on average 1.501108647450111) internal successors, (2708), 1812 states have internal predecessors, (2708), 456 states have call successors, (456), 16 states have call predecessors, (456), 16 states have return successors, (456), 448 states have call predecessors, (456), 456 states have call successors, (456) [2025-02-06 02:16:04,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3620 transitions. [2025-02-06 02:16:04,813 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3620 transitions. Word has length 360 [2025-02-06 02:16:04,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:04,814 INFO L471 AbstractCegarLoop]: Abstraction has 2277 states and 3620 transitions. [2025-02-06 02:16:04,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-02-06 02:16:04,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3620 transitions. [2025-02-06 02:16:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-02-06 02:16:04,818 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:04,819 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:04,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 02:16:04,819 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:04,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:04,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1201475895, now seen corresponding path program 1 times [2025-02-06 02:16:04,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:04,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163080514] [2025-02-06 02:16:04,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:04,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:04,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-02-06 02:16:05,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-02-06 02:16:05,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:05,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 129 proven. 33 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-02-06 02:16:05,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:05,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163080514] [2025-02-06 02:16:05,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163080514] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:05,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66158396] [2025-02-06 02:16:05,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:05,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:05,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:05,882 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 02:16:05,884 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 02:16:05,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-02-06 02:16:06,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-02-06 02:16:06,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:06,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:06,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 02:16:06,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2032 proven. 33 refuted. 0 times theorem prover too weak. 3875 trivial. 0 not checked. [2025-02-06 02:16:06,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:16:06,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 129 proven. 33 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-02-06 02:16:06,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66158396] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:16:06,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:16:06,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2025-02-06 02:16:06,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846102927] [2025-02-06 02:16:06,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:16:06,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 02:16:06,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:06,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 02:16:06,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-02-06 02:16:06,984 INFO L87 Difference]: Start difference. First operand 2277 states and 3620 transitions. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2025-02-06 02:16:08,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:08,635 INFO L93 Difference]: Finished difference Result 9243 states and 14562 transitions. [2025-02-06 02:16:08,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-06 02:16:08,636 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 360 [2025-02-06 02:16:08,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:08,674 INFO L225 Difference]: With dead ends: 9243 [2025-02-06 02:16:08,675 INFO L226 Difference]: Without dead ends: 6969 [2025-02-06 02:16:08,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 716 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=634, Unknown=0, NotChecked=0, Total=870 [2025-02-06 02:16:08,684 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 1002 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:08,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 1296 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-06 02:16:08,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6969 states. [2025-02-06 02:16:09,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6969 to 2793. [2025-02-06 02:16:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2793 states, 2209 states have (on average 1.496152105024898) internal successors, (3305), 2220 states have internal predecessors, (3305), 556 states have call successors, (556), 27 states have call predecessors, (556), 27 states have return successors, (556), 545 states have call predecessors, (556), 556 states have call successors, (556) [2025-02-06 02:16:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2793 states to 2793 states and 4417 transitions. [2025-02-06 02:16:09,109 INFO L78 Accepts]: Start accepts. Automaton has 2793 states and 4417 transitions. Word has length 360 [2025-02-06 02:16:09,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:09,110 INFO L471 AbstractCegarLoop]: Abstraction has 2793 states and 4417 transitions. [2025-02-06 02:16:09,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 2 states have call successors, (66), 2 states have call predecessors, (66), 4 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2025-02-06 02:16:09,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2793 states and 4417 transitions. [2025-02-06 02:16:09,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2025-02-06 02:16:09,118 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:09,118 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:09,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 02:16:09,318 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 02:16:09,319 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:09,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:09,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1412826808, now seen corresponding path program 1 times [2025-02-06 02:16:09,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:09,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211833075] [2025-02-06 02:16:09,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:09,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:09,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-02-06 02:16:09,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-02-06 02:16:09,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:09,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 108 proven. 54 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-02-06 02:16:10,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:10,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211833075] [2025-02-06 02:16:10,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211833075] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:10,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218978617] [2025-02-06 02:16:10,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:10,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:10,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:10,432 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 02:16:10,437 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 02:16:10,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 360 statements into 1 equivalence classes. [2025-02-06 02:16:10,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 360 of 360 statements. [2025-02-06 02:16:10,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:10,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:10,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 02:16:10,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2738 proven. 102 refuted. 0 times theorem prover too weak. 3100 trivial. 0 not checked. [2025-02-06 02:16:11,556 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:16:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 108 proven. 54 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-02-06 02:16:11,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218978617] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:16:11,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:16:11,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 7] total 21 [2025-02-06 02:16:11,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838576107] [2025-02-06 02:16:11,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:16:11,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 02:16:11,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:11,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 02:16:11,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2025-02-06 02:16:11,954 INFO L87 Difference]: Start difference. First operand 2793 states and 4417 transitions. Second operand has 21 states, 21 states have (on average 10.761904761904763) internal successors, (226), 20 states have internal predecessors, (226), 6 states have call successors, (165), 4 states have call predecessors, (165), 7 states have return successors, (165), 6 states have call predecessors, (165), 6 states have call successors, (165) [2025-02-06 02:16:13,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:13,480 INFO L93 Difference]: Finished difference Result 7594 states and 11939 transitions. [2025-02-06 02:16:13,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 02:16:13,480 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.761904761904763) internal successors, (226), 20 states have internal predecessors, (226), 6 states have call successors, (165), 4 states have call predecessors, (165), 7 states have return successors, (165), 6 states have call predecessors, (165), 6 states have call successors, (165) Word has length 360 [2025-02-06 02:16:13,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:13,504 INFO L225 Difference]: With dead ends: 7594 [2025-02-06 02:16:13,504 INFO L226 Difference]: Without dead ends: 4873 [2025-02-06 02:16:13,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2025-02-06 02:16:13,514 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 339 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:13,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1802 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-06 02:16:13,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4873 states. [2025-02-06 02:16:13,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4873 to 4829. [2025-02-06 02:16:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4829 states, 3825 states have (on average 1.4852287581699346) internal successors, (5681), 3848 states have internal predecessors, (5681), 936 states have call successors, (936), 67 states have call predecessors, (936), 67 states have return successors, (936), 913 states have call predecessors, (936), 936 states have call successors, (936) [2025-02-06 02:16:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4829 states to 4829 states and 7553 transitions. [2025-02-06 02:16:13,835 INFO L78 Accepts]: Start accepts. Automaton has 4829 states and 7553 transitions. Word has length 360 [2025-02-06 02:16:13,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:13,837 INFO L471 AbstractCegarLoop]: Abstraction has 4829 states and 7553 transitions. [2025-02-06 02:16:13,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.761904761904763) internal successors, (226), 20 states have internal predecessors, (226), 6 states have call successors, (165), 4 states have call predecessors, (165), 7 states have return successors, (165), 6 states have call predecessors, (165), 6 states have call successors, (165) [2025-02-06 02:16:13,838 INFO L276 IsEmpty]: Start isEmpty. Operand 4829 states and 7553 transitions. [2025-02-06 02:16:13,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2025-02-06 02:16:13,843 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:13,843 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:13,851 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 02:16:14,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:14,044 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:14,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:14,045 INFO L85 PathProgramCache]: Analyzing trace with hash 603695578, now seen corresponding path program 1 times [2025-02-06 02:16:14,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:14,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992536996] [2025-02-06 02:16:14,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:14,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:14,063 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 361 statements into 1 equivalence classes. [2025-02-06 02:16:14,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 361 of 361 statements. [2025-02-06 02:16:14,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:14,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 153 proven. 9 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-02-06 02:16:15,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:15,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992536996] [2025-02-06 02:16:15,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992536996] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:15,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77294197] [2025-02-06 02:16:15,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:15,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:15,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:15,338 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 02:16:15,339 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 02:16:15,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 361 statements into 1 equivalence classes. [2025-02-06 02:16:15,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 361 of 361 statements. [2025-02-06 02:16:15,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:15,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:15,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 02:16:15,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 3825 proven. 330 refuted. 0 times theorem prover too weak. 1785 trivial. 0 not checked. [2025-02-06 02:16:16,415 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:16:17,026 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 282 proven. 348 refuted. 0 times theorem prover too weak. 5310 trivial. 0 not checked. [2025-02-06 02:16:17,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77294197] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:16:17,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:16:17,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 16, 16] total 34 [2025-02-06 02:16:17,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4909657] [2025-02-06 02:16:17,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:16:17,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-06 02:16:17,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:17,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-06 02:16:17,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 02:16:17,030 INFO L87 Difference]: Start difference. First operand 4829 states and 7553 transitions. Second operand has 34 states, 32 states have (on average 7.4375) internal successors, (238), 30 states have internal predecessors, (238), 12 states have call successors, (146), 5 states have call predecessors, (146), 11 states have return successors, (147), 12 states have call predecessors, (147), 12 states have call successors, (147) [2025-02-06 02:16:30,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:30,560 INFO L93 Difference]: Finished difference Result 32721 states and 49089 transitions. [2025-02-06 02:16:30,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2025-02-06 02:16:30,561 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 7.4375) internal successors, (238), 30 states have internal predecessors, (238), 12 states have call successors, (146), 5 states have call predecessors, (146), 11 states have return successors, (147), 12 states have call predecessors, (147), 12 states have call successors, (147) Word has length 361 [2025-02-06 02:16:30,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:30,731 INFO L225 Difference]: With dead ends: 32721 [2025-02-06 02:16:30,732 INFO L226 Difference]: Without dead ends: 27972 [2025-02-06 02:16:30,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30948 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=12205, Invalid=59351, Unknown=0, NotChecked=0, Total=71556 [2025-02-06 02:16:30,763 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 6132 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 5161 mSolverCounterSat, 2176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6150 SdHoareTripleChecker+Valid, 3881 SdHoareTripleChecker+Invalid, 7337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2176 IncrementalHoareTripleChecker+Valid, 5161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:30,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6150 Valid, 3881 Invalid, 7337 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2176 Valid, 5161 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2025-02-06 02:16:30,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27972 states. [2025-02-06 02:16:31,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27972 to 14221. [2025-02-06 02:16:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14221 states, 12048 states have (on average 1.486968791500664) internal successors, (17915), 12141 states have internal predecessors, (17915), 1881 states have call successors, (1881), 291 states have call predecessors, (1881), 291 states have return successors, (1881), 1788 states have call predecessors, (1881), 1881 states have call successors, (1881) [2025-02-06 02:16:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14221 states to 14221 states and 21677 transitions. [2025-02-06 02:16:31,981 INFO L78 Accepts]: Start accepts. Automaton has 14221 states and 21677 transitions. Word has length 361 [2025-02-06 02:16:31,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:31,982 INFO L471 AbstractCegarLoop]: Abstraction has 14221 states and 21677 transitions. [2025-02-06 02:16:31,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 7.4375) internal successors, (238), 30 states have internal predecessors, (238), 12 states have call successors, (146), 5 states have call predecessors, (146), 11 states have return successors, (147), 12 states have call predecessors, (147), 12 states have call successors, (147) [2025-02-06 02:16:31,983 INFO L276 IsEmpty]: Start isEmpty. Operand 14221 states and 21677 transitions. [2025-02-06 02:16:31,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2025-02-06 02:16:31,995 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:31,995 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:32,003 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 02:16:32,196 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,SelfDestructingSolverStorable7 [2025-02-06 02:16:32,197 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:32,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:32,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1957088186, now seen corresponding path program 1 times [2025-02-06 02:16:32,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:32,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525598840] [2025-02-06 02:16:32,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:32,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:32,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 362 statements into 1 equivalence classes. [2025-02-06 02:16:32,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 362 of 362 statements. [2025-02-06 02:16:32,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:32,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:33,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 51 proven. 111 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-02-06 02:16:33,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:33,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525598840] [2025-02-06 02:16:33,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525598840] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:33,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037129858] [2025-02-06 02:16:33,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:33,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:33,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:33,023 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 02:16:33,026 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 02:16:33,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 362 statements into 1 equivalence classes. [2025-02-06 02:16:33,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 362 of 362 statements. [2025-02-06 02:16:33,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:33,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:33,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 02:16:33,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:33,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2604 proven. 111 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2025-02-06 02:16:33,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:16:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 51 proven. 111 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-02-06 02:16:34,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037129858] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:16:34,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:16:34,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 17 [2025-02-06 02:16:34,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680880052] [2025-02-06 02:16:34,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:16:34,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 02:16:34,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:34,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 02:16:34,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2025-02-06 02:16:34,489 INFO L87 Difference]: Start difference. First operand 14221 states and 21677 transitions. Second operand has 17 states, 16 states have (on average 11.125) internal successors, (178), 17 states have internal predecessors, (178), 7 states have call successors, (165), 3 states have call predecessors, (165), 6 states have return successors, (165), 7 states have call predecessors, (165), 7 states have call successors, (165) [2025-02-06 02:16:36,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:36,956 INFO L93 Difference]: Finished difference Result 36390 states and 55963 transitions. [2025-02-06 02:16:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 02:16:36,957 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 11.125) internal successors, (178), 17 states have internal predecessors, (178), 7 states have call successors, (165), 3 states have call predecessors, (165), 6 states have return successors, (165), 7 states have call predecessors, (165), 7 states have call successors, (165) Word has length 362 [2025-02-06 02:16:36,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:37,021 INFO L225 Difference]: With dead ends: 36390 [2025-02-06 02:16:37,021 INFO L226 Difference]: Without dead ends: 22269 [2025-02-06 02:16:37,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2025-02-06 02:16:37,048 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 771 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 1594 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:37,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 1673 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1594 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-06 02:16:37,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22269 states. [2025-02-06 02:16:38,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22269 to 14777. [2025-02-06 02:16:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14777 states, 12398 states have (on average 1.4870946926923698) internal successors, (18437), 12499 states have internal predecessors, (18437), 2055 states have call successors, (2055), 323 states have call predecessors, (2055), 323 states have return successors, (2055), 1954 states have call predecessors, (2055), 2055 states have call successors, (2055) [2025-02-06 02:16:38,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14777 states to 14777 states and 22547 transitions. [2025-02-06 02:16:38,859 INFO L78 Accepts]: Start accepts. Automaton has 14777 states and 22547 transitions. Word has length 362 [2025-02-06 02:16:38,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:38,862 INFO L471 AbstractCegarLoop]: Abstraction has 14777 states and 22547 transitions. [2025-02-06 02:16:38,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 11.125) internal successors, (178), 17 states have internal predecessors, (178), 7 states have call successors, (165), 3 states have call predecessors, (165), 6 states have return successors, (165), 7 states have call predecessors, (165), 7 states have call successors, (165) [2025-02-06 02:16:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 14777 states and 22547 transitions. [2025-02-06 02:16:38,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2025-02-06 02:16:38,884 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:38,884 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:38,893 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 02:16:39,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:39,085 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:39,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:39,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1118025128, now seen corresponding path program 1 times [2025-02-06 02:16:39,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:39,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221778159] [2025-02-06 02:16:39,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:39,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:39,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 363 statements into 1 equivalence classes. [2025-02-06 02:16:39,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 363 of 363 statements. [2025-02-06 02:16:39,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:39,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2025-02-06 02:16:39,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:39,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221778159] [2025-02-06 02:16:39,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221778159] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:16:39,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:16:39,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:16:39,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464990121] [2025-02-06 02:16:39,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:16:39,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:16:39,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:39,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:16:39,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:16:39,501 INFO L87 Difference]: Start difference. First operand 14777 states and 22547 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, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-02-06 02:16:41,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:16:41,205 INFO L93 Difference]: Finished difference Result 31579 states and 47972 transitions. [2025-02-06 02:16:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:16:41,206 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, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 363 [2025-02-06 02:16:41,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:16:41,296 INFO L225 Difference]: With dead ends: 31579 [2025-02-06 02:16:41,296 INFO L226 Difference]: Without dead ends: 23601 [2025-02-06 02:16:41,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 02:16:41,321 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 285 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:16:41,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 859 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 02:16:41,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23601 states. [2025-02-06 02:16:43,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23601 to 21173. [2025-02-06 02:16:43,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21173 states, 17754 states have (on average 1.4796102286808606) internal successors, (26269), 17895 states have internal predecessors, (26269), 2939 states have call successors, (2939), 479 states have call predecessors, (2939), 479 states have return successors, (2939), 2798 states have call predecessors, (2939), 2939 states have call successors, (2939) [2025-02-06 02:16:43,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21173 states to 21173 states and 32147 transitions. [2025-02-06 02:16:43,193 INFO L78 Accepts]: Start accepts. Automaton has 21173 states and 32147 transitions. Word has length 363 [2025-02-06 02:16:43,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:16:43,194 INFO L471 AbstractCegarLoop]: Abstraction has 21173 states and 32147 transitions. [2025-02-06 02:16:43,194 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, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2025-02-06 02:16:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 21173 states and 32147 transitions. [2025-02-06 02:16:43,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2025-02-06 02:16:43,202 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:16:43,202 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:43,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 02:16:43,203 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:16:43,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:16:43,204 INFO L85 PathProgramCache]: Analyzing trace with hash 712967078, now seen corresponding path program 1 times [2025-02-06 02:16:43,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:16:43,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671704258] [2025-02-06 02:16:43,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:43,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:16:43,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 363 statements into 1 equivalence classes. [2025-02-06 02:16:43,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 363 of 363 statements. [2025-02-06 02:16:43,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:43,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 258 proven. 60 refuted. 0 times theorem prover too weak. 5622 trivial. 0 not checked. [2025-02-06 02:16:48,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:16:48,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671704258] [2025-02-06 02:16:48,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671704258] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:16:48,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171663411] [2025-02-06 02:16:48,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:16:48,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:16:48,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:16:48,613 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 02:16:48,614 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 02:16:48,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 363 statements into 1 equivalence classes. [2025-02-06 02:16:48,927 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 363 of 363 statements. [2025-02-06 02:16:48,927 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:16:48,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:16:48,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-06 02:16:48,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:16:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 4219 proven. 201 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2025-02-06 02:16:58,685 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:16:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 153 proven. 9 refuted. 0 times theorem prover too weak. 5778 trivial. 0 not checked. [2025-02-06 02:16:59,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171663411] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:16:59,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:16:59,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 9] total 36 [2025-02-06 02:16:59,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226676842] [2025-02-06 02:16:59,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:16:59,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-06 02:16:59,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:16:59,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-06 02:16:59,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1088, Unknown=3, NotChecked=0, Total=1260 [2025-02-06 02:16:59,847 INFO L87 Difference]: Start difference. First operand 21173 states and 32147 transitions. Second operand has 36 states, 36 states have (on average 7.138888888888889) internal successors, (257), 34 states have internal predecessors, (257), 10 states have call successors, (147), 6 states have call predecessors, (147), 10 states have return successors, (148), 10 states have call predecessors, (148), 10 states have call successors, (148) [2025-02-06 02:17:07,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-06 02:17:15,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-06 02:17:19,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-02-06 02:17:23,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []