./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-90.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_amount500_file-90.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 01664cc77fe0f94aba93d78be3bbb8d6dfcad417fd9d550a500a598597cc5b39 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 02:45:30,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 02:45:30,863 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 02:45:30,870 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 02:45:30,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 02:45:30,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 02:45:30,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 02:45:30,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 02:45:30,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 02:45:30,892 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 02:45:30,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 02:45:30,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 02:45:30,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 02:45:30,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 02:45:30,894 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 02:45:30,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 02:45:30,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 02:45:30,894 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 02:45:30,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 02:45:30,894 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 02:45:30,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 02:45:30,894 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 02:45:30,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 02:45:30,895 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 02:45:30,895 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 02:45:30,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 02:45:30,895 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 02:45:30,895 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 02:45:30,895 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 02:45:30,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 02:45:30,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 02:45:30,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 02:45:30,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:45:30,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 02:45:30,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 02:45:30,896 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 02:45:30,896 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 02:45:30,896 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 02:45:30,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 02:45:30,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 02:45:30,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 02:45:30,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 02:45:30,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 02:45:30,897 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 -> 01664cc77fe0f94aba93d78be3bbb8d6dfcad417fd9d550a500a598597cc5b39 [2025-02-06 02:45:31,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 02:45:31,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 02:45:31,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 02:45:31,192 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 02:45:31,192 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 02:45:31,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-90.i [2025-02-06 02:45:32,435 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dcd56baa9/cdc5886f6177404d8a6aede63f72a6d4/FLAGa75a2d915 [2025-02-06 02:45:32,841 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 02:45:32,847 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-90.i [2025-02-06 02:45:32,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dcd56baa9/cdc5886f6177404d8a6aede63f72a6d4/FLAGa75a2d915 [2025-02-06 02:45:32,872 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dcd56baa9/cdc5886f6177404d8a6aede63f72a6d4 [2025-02-06 02:45:32,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 02:45:32,875 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 02:45:32,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 02:45:32,877 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 02:45:32,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 02:45:32,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:45:32" (1/1) ... [2025-02-06 02:45:32,886 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3f5dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:32, skipping insertion in model container [2025-02-06 02:45:32,886 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 02:45:32" (1/1) ... [2025-02-06 02:45:32,921 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 02:45:33,036 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_amount500_file-90.i[916,929] [2025-02-06 02:45:33,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:45:33,228 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 02:45:33,236 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_amount500_file-90.i[916,929] [2025-02-06 02:45:33,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 02:45:33,372 INFO L204 MainTranslator]: Completed translation [2025-02-06 02:45:33,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:33 WrapperNode [2025-02-06 02:45:33,373 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 02:45:33,374 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 02:45:33,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 02:45:33,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 02:45:33,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:33" (1/1) ... [2025-02-06 02:45:33,404 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:33" (1/1) ... [2025-02-06 02:45:33,486 INFO L138 Inliner]: procedures = 26, calls = 99, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 700 [2025-02-06 02:45:33,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 02:45:33,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 02:45:33,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 02:45:33,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 02:45:33,493 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:33" (1/1) ... [2025-02-06 02:45:33,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:33" (1/1) ... [2025-02-06 02:45:33,506 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:33" (1/1) ... [2025-02-06 02:45:33,616 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 02:45:33,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:33" (1/1) ... [2025-02-06 02:45:33,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:33" (1/1) ... [2025-02-06 02:45:33,639 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:33" (1/1) ... [2025-02-06 02:45:33,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:33" (1/1) ... [2025-02-06 02:45:33,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:33" (1/1) ... [2025-02-06 02:45:33,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:33" (1/1) ... [2025-02-06 02:45:33,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 02:45:33,670 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 02:45:33,670 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 02:45:33,671 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 02:45:33,671 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:33" (1/1) ... [2025-02-06 02:45:33,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 02:45:33,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:45:33,700 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 02:45:33,705 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 02:45:33,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 02:45:33,723 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 02:45:33,723 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 02:45:33,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 02:45:33,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 02:45:33,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 02:45:33,846 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 02:45:33,848 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 02:45:34,619 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L669: havoc property_#t~ite55#1;havoc property_#t~bitwise54#1;havoc property_#t~short56#1;havoc property_#t~ite59#1;havoc property_#t~ite58#1;havoc property_#t~bitwise57#1;havoc property_#t~short60#1; [2025-02-06 02:45:34,732 INFO L? ?]: Removed 68 outVars from TransFormulas that were not future-live. [2025-02-06 02:45:34,734 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 02:45:34,782 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 02:45:34,782 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 02:45:34,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:45:34 BoogieIcfgContainer [2025-02-06 02:45:34,782 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 02:45:34,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 02:45:34,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 02:45:34,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 02:45:34,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 02:45:32" (1/3) ... [2025-02-06 02:45:34,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3029e23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:45:34, skipping insertion in model container [2025-02-06 02:45:34,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 02:45:33" (2/3) ... [2025-02-06 02:45:34,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3029e23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 02:45:34, skipping insertion in model container [2025-02-06 02:45:34,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 02:45:34" (3/3) ... [2025-02-06 02:45:34,791 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-90.i [2025-02-06 02:45:34,801 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 02:45:34,804 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-90.i that has 2 procedures, 288 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 02:45:34,855 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 02:45:34,864 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;@48b960d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 02:45:34,864 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 02:45:34,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 199 states have (on average 1.5326633165829147) internal successors, (305), 200 states have internal predecessors, (305), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2025-02-06 02:45:34,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2025-02-06 02:45:34,889 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:45:34,890 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:34,890 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:45:34,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:45:34,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1848074300, now seen corresponding path program 1 times [2025-02-06 02:45:34,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:45:34,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561522081] [2025-02-06 02:45:34,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:45:34,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:45:35,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 565 statements into 1 equivalence classes. [2025-02-06 02:45:35,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 565 of 565 statements. [2025-02-06 02:45:35,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:45:35,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:45:35,580 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 170 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2025-02-06 02:45:35,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:45:35,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561522081] [2025-02-06 02:45:35,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561522081] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:45:35,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029010552] [2025-02-06 02:45:35,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:45:35,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:45:35,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:45:35,585 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 02:45:35,586 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 02:45:35,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 565 statements into 1 equivalence classes. [2025-02-06 02:45:35,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 565 of 565 statements. [2025-02-06 02:45:35,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:45:35,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:45:35,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 1358 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 02:45:35,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:45:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 14450 trivial. 0 not checked. [2025-02-06 02:45:36,012 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 02:45:36,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029010552] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:45:36,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:45:36,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 02:45:36,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064760970] [2025-02-06 02:45:36,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:45:36,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 02:45:36,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:45:36,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 02:45:36,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 02:45:36,036 INFO L87 Difference]: Start difference. First operand has 288 states, 199 states have (on average 1.5326633165829147) internal successors, (305), 200 states have internal predecessors, (305), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2025-02-06 02:45:36,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:45:36,102 INFO L93 Difference]: Finished difference Result 570 states and 1035 transitions. [2025-02-06 02:45:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 02:45:36,104 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) Word has length 565 [2025-02-06 02:45:36,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:45:36,110 INFO L225 Difference]: With dead ends: 570 [2025-02-06 02:45:36,110 INFO L226 Difference]: Without dead ends: 285 [2025-02-06 02:45:36,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 566 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 02:45:36,117 INFO L435 NwaCegarLoop]: 466 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, 466 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 02:45:36,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 466 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:45:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2025-02-06 02:45:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2025-02-06 02:45:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 197 states have (on average 1.5126903553299493) internal successors, (298), 197 states have internal predecessors, (298), 86 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2025-02-06 02:45:36,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 470 transitions. [2025-02-06 02:45:36,182 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 470 transitions. Word has length 565 [2025-02-06 02:45:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:45:36,182 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 470 transitions. [2025-02-06 02:45:36,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 2 states have call successors, (86), 2 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 2 states have call successors, (86) [2025-02-06 02:45:36,183 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 470 transitions. [2025-02-06 02:45:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2025-02-06 02:45:36,197 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:45:36,197 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:36,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 02:45:36,398 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 02:45:36,398 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:45:36,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:45:36,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2122655298, now seen corresponding path program 1 times [2025-02-06 02:45:36,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:45:36,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763941491] [2025-02-06 02:45:36,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:45:36,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:45:36,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 565 statements into 1 equivalence classes. [2025-02-06 02:45:36,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 565 of 565 statements. [2025-02-06 02:45:36,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:45:36,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:45:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2025-02-06 02:45:36,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:45:36,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763941491] [2025-02-06 02:45:36,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763941491] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:45:36,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:45:36,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:45:36,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003876791] [2025-02-06 02:45:36,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:45:36,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:45:36,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:45:36,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:45:36,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:45:36,991 INFO L87 Difference]: Start difference. First operand 285 states and 470 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2025-02-06 02:45:37,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:45:37,172 INFO L93 Difference]: Finished difference Result 848 states and 1402 transitions. [2025-02-06 02:45:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:45:37,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 565 [2025-02-06 02:45:37,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:45:37,184 INFO L225 Difference]: With dead ends: 848 [2025-02-06 02:45:37,186 INFO L226 Difference]: Without dead ends: 566 [2025-02-06 02:45:37,188 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 02:45:37,189 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 438 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 02:45:37,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 887 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 02:45:37,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2025-02-06 02:45:37,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 564. [2025-02-06 02:45:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 389 states have (on average 1.4987146529562982) internal successors, (583), 389 states have internal predecessors, (583), 172 states have call successors, (172), 2 states have call predecessors, (172), 2 states have return successors, (172), 172 states have call predecessors, (172), 172 states have call successors, (172) [2025-02-06 02:45:37,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 927 transitions. [2025-02-06 02:45:37,262 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 927 transitions. Word has length 565 [2025-02-06 02:45:37,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:45:37,264 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 927 transitions. [2025-02-06 02:45:37,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2025-02-06 02:45:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 927 transitions. [2025-02-06 02:45:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2025-02-06 02:45:37,269 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:45:37,269 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:37,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 02:45:37,269 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:45:37,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:45:37,270 INFO L85 PathProgramCache]: Analyzing trace with hash 17500386, now seen corresponding path program 1 times [2025-02-06 02:45:37,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:45:37,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143972360] [2025-02-06 02:45:37,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:45:37,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:45:37,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 565 statements into 1 equivalence classes. [2025-02-06 02:45:37,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 565 of 565 statements. [2025-02-06 02:45:37,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:45:37,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:45:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2025-02-06 02:45:38,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:45:38,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143972360] [2025-02-06 02:45:38,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143972360] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:45:38,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:45:38,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 02:45:38,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107413313] [2025-02-06 02:45:38,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:45:38,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 02:45:38,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:45:39,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 02:45:39,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 02:45:39,000 INFO L87 Difference]: Start difference. First operand 564 states and 927 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2025-02-06 02:45:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:45:39,571 INFO L93 Difference]: Finished difference Result 1675 states and 2735 transitions. [2025-02-06 02:45:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 02:45:39,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 565 [2025-02-06 02:45:39,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:45:39,584 INFO L225 Difference]: With dead ends: 1675 [2025-02-06 02:45:39,584 INFO L226 Difference]: Without dead ends: 1114 [2025-02-06 02:45:39,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 02:45:39,587 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 750 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 02:45:39,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1958 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 02:45:39,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2025-02-06 02:45:39,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 908. [2025-02-06 02:45:39,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 711 states have (on average 1.5541490857946554) internal successors, (1105), 713 states have internal predecessors, (1105), 192 states have call successors, (192), 4 states have call predecessors, (192), 4 states have return successors, (192), 190 states have call predecessors, (192), 192 states have call successors, (192) [2025-02-06 02:45:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1489 transitions. [2025-02-06 02:45:39,699 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1489 transitions. Word has length 565 [2025-02-06 02:45:39,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:45:39,700 INFO L471 AbstractCegarLoop]: Abstraction has 908 states and 1489 transitions. [2025-02-06 02:45:39,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2025-02-06 02:45:39,700 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1489 transitions. [2025-02-06 02:45:39,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2025-02-06 02:45:39,706 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:45:39,706 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:39,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 02:45:39,706 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:45:39,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:45:39,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1650304385, now seen corresponding path program 1 times [2025-02-06 02:45:39,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:45:39,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216318882] [2025-02-06 02:45:39,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:45:39,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:45:39,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 565 statements into 1 equivalence classes. [2025-02-06 02:45:39,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 565 of 565 statements. [2025-02-06 02:45:39,817 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:45:39,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:45:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2025-02-06 02:45:40,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:45:40,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216318882] [2025-02-06 02:45:40,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216318882] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:45:40,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:45:40,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 02:45:40,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537796041] [2025-02-06 02:45:40,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:45:40,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 02:45:40,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:45:40,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 02:45:40,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:45:40,380 INFO L87 Difference]: Start difference. First operand 908 states and 1489 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2025-02-06 02:45:40,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:45:40,475 INFO L93 Difference]: Finished difference Result 2238 states and 3667 transitions. [2025-02-06 02:45:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 02:45:40,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 565 [2025-02-06 02:45:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:45:40,483 INFO L225 Difference]: With dead ends: 2238 [2025-02-06 02:45:40,484 INFO L226 Difference]: Without dead ends: 1333 [2025-02-06 02:45:40,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 02:45:40,486 INFO L435 NwaCegarLoop]: 723 mSDtfsCounter, 446 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 02:45:40,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 1180 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 02:45:40,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2025-02-06 02:45:40,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 933. [2025-02-06 02:45:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 736 states have (on average 1.5584239130434783) internal successors, (1147), 738 states have internal predecessors, (1147), 192 states have call successors, (192), 4 states have call predecessors, (192), 4 states have return successors, (192), 190 states have call predecessors, (192), 192 states have call successors, (192) [2025-02-06 02:45:40,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1531 transitions. [2025-02-06 02:45:40,547 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1531 transitions. Word has length 565 [2025-02-06 02:45:40,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:45:40,547 INFO L471 AbstractCegarLoop]: Abstraction has 933 states and 1531 transitions. [2025-02-06 02:45:40,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2025-02-06 02:45:40,548 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1531 transitions. [2025-02-06 02:45:40,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2025-02-06 02:45:40,551 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:45:40,551 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:40,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 02:45:40,552 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:45:40,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:45:40,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1913118719, now seen corresponding path program 1 times [2025-02-06 02:45:40,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:45:40,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776352470] [2025-02-06 02:45:40,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:45:40,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:45:40,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 565 statements into 1 equivalence classes. [2025-02-06 02:45:41,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 565 of 565 statements. [2025-02-06 02:45:41,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:45:41,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:45:41,970 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14620 trivial. 0 not checked. [2025-02-06 02:45:41,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:45:41,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776352470] [2025-02-06 02:45:41,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776352470] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 02:45:41,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 02:45:41,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 02:45:41,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061316175] [2025-02-06 02:45:41,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 02:45:41,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 02:45:41,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:45:41,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 02:45:41,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 02:45:41,973 INFO L87 Difference]: Start difference. First operand 933 states and 1531 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2025-02-06 02:45:42,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:45:42,392 INFO L93 Difference]: Finished difference Result 2591 states and 4267 transitions. [2025-02-06 02:45:42,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 02:45:42,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) Word has length 565 [2025-02-06 02:45:42,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:45:42,401 INFO L225 Difference]: With dead ends: 2591 [2025-02-06 02:45:42,401 INFO L226 Difference]: Without dead ends: 1661 [2025-02-06 02:45:42,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 02:45:42,404 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 418 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 02:45:42,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1374 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 02:45:42,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2025-02-06 02:45:42,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1082. [2025-02-06 02:45:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 798 states have (on average 1.5225563909774436) internal successors, (1215), 800 states have internal predecessors, (1215), 278 states have call successors, (278), 5 states have call predecessors, (278), 5 states have return successors, (278), 276 states have call predecessors, (278), 278 states have call successors, (278) [2025-02-06 02:45:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1771 transitions. [2025-02-06 02:45:42,501 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1771 transitions. Word has length 565 [2025-02-06 02:45:42,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:45:42,502 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1771 transitions. [2025-02-06 02:45:42,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 1 states have call successors, (86), 1 states have call predecessors, (86), 1 states have return successors, (86), 1 states have call predecessors, (86), 1 states have call successors, (86) [2025-02-06 02:45:42,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1771 transitions. [2025-02-06 02:45:42,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2025-02-06 02:45:42,506 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:45:42,506 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:42,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 02:45:42,507 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:45:42,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:45:42,507 INFO L85 PathProgramCache]: Analyzing trace with hash -811393371, now seen corresponding path program 1 times [2025-02-06 02:45:42,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:45:42,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40850950] [2025-02-06 02:45:42,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:45:42,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:45:42,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 566 statements into 1 equivalence classes. [2025-02-06 02:45:44,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 566 of 566 statements. [2025-02-06 02:45:44,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:45:44,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:45:44,988 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 210 proven. 45 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2025-02-06 02:45:44,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:45:44,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40850950] [2025-02-06 02:45:44,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40850950] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:45:44,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091759717] [2025-02-06 02:45:44,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:45:44,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:45:44,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:45:44,993 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 02:45:44,998 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 02:45:45,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 566 statements into 1 equivalence classes. [2025-02-06 02:45:45,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 566 of 566 statements. [2025-02-06 02:45:45,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:45:45,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:45:45,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 1360 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 02:45:45,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:45:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 3973 proven. 39 refuted. 0 times theorem prover too weak. 10608 trivial. 0 not checked. [2025-02-06 02:45:45,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:45:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 216 proven. 39 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2025-02-06 02:45:45,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091759717] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:45:45,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:45:45,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-06 02:45:45,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702332967] [2025-02-06 02:45:45,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:45:45,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 02:45:45,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:45:45,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 02:45:45,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-06 02:45:45,947 INFO L87 Difference]: Start difference. First operand 1082 states and 1771 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 3 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2025-02-06 02:45:46,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:45:46,493 INFO L93 Difference]: Finished difference Result 2054 states and 3335 transitions. [2025-02-06 02:45:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 02:45:46,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 3 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) Word has length 566 [2025-02-06 02:45:46,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:45:46,501 INFO L225 Difference]: With dead ends: 2054 [2025-02-06 02:45:46,501 INFO L226 Difference]: Without dead ends: 1124 [2025-02-06 02:45:46,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1129 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2025-02-06 02:45:46,504 INFO L435 NwaCegarLoop]: 364 mSDtfsCounter, 539 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 02:45:46,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 921 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 02:45:46,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2025-02-06 02:45:46,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1106. [2025-02-06 02:45:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 816 states have (on average 1.4791666666666667) internal successors, (1207), 818 states have internal predecessors, (1207), 278 states have call successors, (278), 11 states have call predecessors, (278), 11 states have return successors, (278), 276 states have call predecessors, (278), 278 states have call successors, (278) [2025-02-06 02:45:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1763 transitions. [2025-02-06 02:45:46,598 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1763 transitions. Word has length 566 [2025-02-06 02:45:46,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:45:46,599 INFO L471 AbstractCegarLoop]: Abstraction has 1106 states and 1763 transitions. [2025-02-06 02:45:46,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 3 states have call successors, (114), 2 states have call predecessors, (114), 4 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2025-02-06 02:45:46,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1763 transitions. [2025-02-06 02:45:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2025-02-06 02:45:46,603 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:45:46,603 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:46,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 02:45:46,808 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 02:45:46,808 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:45:46,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:45:46,809 INFO L85 PathProgramCache]: Analyzing trace with hash 627949127, now seen corresponding path program 1 times [2025-02-06 02:45:46,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:45:46,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691996382] [2025-02-06 02:45:46,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:45:46,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:45:46,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 566 statements into 1 equivalence classes. [2025-02-06 02:45:48,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 566 of 566 statements. [2025-02-06 02:45:48,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:45:48,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:45:49,083 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 204 proven. 51 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2025-02-06 02:45:49,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:45:49,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691996382] [2025-02-06 02:45:49,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691996382] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:45:49,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287012334] [2025-02-06 02:45:49,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:45:49,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:45:49,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:45:49,088 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 02:45:49,093 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 02:45:49,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 566 statements into 1 equivalence classes. [2025-02-06 02:45:49,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 566 of 566 statements. [2025-02-06 02:45:49,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:45:49,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:45:49,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 1356 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 02:45:49,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:45:49,801 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 4845 proven. 51 refuted. 0 times theorem prover too weak. 9724 trivial. 0 not checked. [2025-02-06 02:45:49,801 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:45:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 204 proven. 51 refuted. 0 times theorem prover too weak. 14365 trivial. 0 not checked. [2025-02-06 02:45:50,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287012334] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:45:50,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:45:50,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2025-02-06 02:45:50,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87161878] [2025-02-06 02:45:50,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:45:50,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 02:45:50,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:45:50,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 02:45:50,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-06 02:45:50,214 INFO L87 Difference]: Start difference. First operand 1106 states and 1763 transitions. Second operand has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2025-02-06 02:45:51,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:45:51,681 INFO L93 Difference]: Finished difference Result 3289 states and 5198 transitions. [2025-02-06 02:45:51,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 02:45:51,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) Word has length 566 [2025-02-06 02:45:51,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:45:51,697 INFO L225 Difference]: With dead ends: 3289 [2025-02-06 02:45:51,698 INFO L226 Difference]: Without dead ends: 2343 [2025-02-06 02:45:51,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1154 GetRequests, 1130 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2025-02-06 02:45:51,702 INFO L435 NwaCegarLoop]: 360 mSDtfsCounter, 1814 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1883 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-06 02:45:51,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1883 Valid, 1644 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-06 02:45:51,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2343 states. [2025-02-06 02:45:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2343 to 1376. [2025-02-06 02:45:51,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1003 states have (on average 1.4636091724825524) internal successors, (1468), 1007 states have internal predecessors, (1468), 355 states have call successors, (355), 17 states have call predecessors, (355), 17 states have return successors, (355), 351 states have call predecessors, (355), 355 states have call successors, (355) [2025-02-06 02:45:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 2178 transitions. [2025-02-06 02:45:51,844 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 2178 transitions. Word has length 566 [2025-02-06 02:45:51,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:45:51,847 INFO L471 AbstractCegarLoop]: Abstraction has 1376 states and 2178 transitions. [2025-02-06 02:45:51,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 2 states have call successors, (103), 2 states have call predecessors, (103), 4 states have return successors, (104), 2 states have call predecessors, (104), 2 states have call successors, (104) [2025-02-06 02:45:51,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 2178 transitions. [2025-02-06 02:45:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2025-02-06 02:45:51,851 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:45:51,851 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:51,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 02:45:52,052 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 02:45:52,053 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:45:52,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:45:52,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1589563144, now seen corresponding path program 1 times [2025-02-06 02:45:52,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:45:52,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936070381] [2025-02-06 02:45:52,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:45:52,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:45:52,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 566 statements into 1 equivalence classes. [2025-02-06 02:45:53,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 566 of 566 statements. [2025-02-06 02:45:53,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:45:53,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:45:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 303 proven. 201 refuted. 0 times theorem prover too weak. 14116 trivial. 0 not checked. [2025-02-06 02:45:53,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:45:53,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936070381] [2025-02-06 02:45:53,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936070381] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:45:53,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480669501] [2025-02-06 02:45:53,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:45:53,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:45:53,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:45:53,897 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 02:45:53,901 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 02:45:54,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 566 statements into 1 equivalence classes. [2025-02-06 02:45:54,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 566 of 566 statements. [2025-02-06 02:45:54,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:45:54,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:45:54,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 02:45:54,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:45:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 9469 proven. 333 refuted. 0 times theorem prover too weak. 4818 trivial. 0 not checked. [2025-02-06 02:45:55,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:45:56,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 303 proven. 204 refuted. 0 times theorem prover too weak. 14113 trivial. 0 not checked. [2025-02-06 02:45:56,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480669501] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 02:45:56,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 02:45:56,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 9] total 21 [2025-02-06 02:45:56,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564373741] [2025-02-06 02:45:56,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 02:45:56,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 02:45:56,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:45:56,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 02:45:56,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2025-02-06 02:45:56,104 INFO L87 Difference]: Start difference. First operand 1376 states and 2178 transitions. Second operand has 21 states, 21 states have (on average 10.666666666666666) internal successors, (224), 21 states have internal predecessors, (224), 7 states have call successors, (180), 4 states have call predecessors, (180), 8 states have return successors, (181), 7 states have call predecessors, (181), 7 states have call successors, (181) [2025-02-06 02:45:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 02:45:57,198 INFO L93 Difference]: Finished difference Result 3230 states and 5114 transitions. [2025-02-06 02:45:57,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 02:45:57,200 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.666666666666666) internal successors, (224), 21 states have internal predecessors, (224), 7 states have call successors, (180), 4 states have call predecessors, (180), 8 states have return successors, (181), 7 states have call predecessors, (181), 7 states have call successors, (181) Word has length 566 [2025-02-06 02:45:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 02:45:57,208 INFO L225 Difference]: With dead ends: 3230 [2025-02-06 02:45:57,208 INFO L226 Difference]: Without dead ends: 2022 [2025-02-06 02:45:57,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1144 GetRequests, 1120 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2025-02-06 02:45:57,212 INFO L435 NwaCegarLoop]: 515 mSDtfsCounter, 1596 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-06 02:45:57,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 1690 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-06 02:45:57,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2025-02-06 02:45:57,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1424. [2025-02-06 02:45:57,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1039 states have (on average 1.4456207892204043) internal successors, (1502), 1043 states have internal predecessors, (1502), 355 states have call successors, (355), 29 states have call predecessors, (355), 29 states have return successors, (355), 351 states have call predecessors, (355), 355 states have call successors, (355) [2025-02-06 02:45:57,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2212 transitions. [2025-02-06 02:45:57,368 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2212 transitions. Word has length 566 [2025-02-06 02:45:57,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 02:45:57,368 INFO L471 AbstractCegarLoop]: Abstraction has 1424 states and 2212 transitions. [2025-02-06 02:45:57,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.666666666666666) internal successors, (224), 21 states have internal predecessors, (224), 7 states have call successors, (180), 4 states have call predecessors, (180), 8 states have return successors, (181), 7 states have call predecessors, (181), 7 states have call successors, (181) [2025-02-06 02:45:57,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2212 transitions. [2025-02-06 02:45:57,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2025-02-06 02:45:57,374 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 02:45:57,374 INFO L218 NwaCegarLoop]: trace histogram [86, 86, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:57,385 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 02:45:57,575 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 02:45:57,576 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 02:45:57,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 02:45:57,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2099688672, now seen corresponding path program 1 times [2025-02-06 02:45:57,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 02:45:57,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240852110] [2025-02-06 02:45:57,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:45:57,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 02:45:57,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 567 statements into 1 equivalence classes. [2025-02-06 02:46:00,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 567 of 567 statements. [2025-02-06 02:46:00,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:46:00,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 02:46:00,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471350120] [2025-02-06 02:46:00,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 02:46:00,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 02:46:00,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 02:46:00,547 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 02:46:00,554 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 02:46:00,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 567 statements into 1 equivalence classes. [2025-02-06 02:46:01,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 567 of 567 statements. [2025-02-06 02:46:01,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 02:46:01,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 02:46:01,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 1356 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-02-06 02:46:01,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 02:46:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 14620 backedges. 10684 proven. 459 refuted. 0 times theorem prover too weak. 3477 trivial. 0 not checked. [2025-02-06 02:46:06,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 02:46:12,303 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_z_63 Int)) (or (< 255 v_z_63) (< c_~var_1_67~0 v_z_63) (< v_z_63 (+ (mod (mod v_z_63 (mod c_~var_1_61~0 256)) 4294967296) 1)))) is different from false [2025-02-06 02:46:23,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 02:46:23,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240852110] [2025-02-06 02:46:23,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 02:46:23,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471350120] [2025-02-06 02:46:23,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471350120] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 02:46:23,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 02:46:23,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2025-02-06 02:46:23,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357455318] [2025-02-06 02:46:23,171 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 02:46:23,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-06 02:46:23,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 02:46:23,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-06 02:46:23,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1398, Unknown=1, NotChecked=80, Total=1806 [2025-02-06 02:46:23,173 INFO L87 Difference]: Start difference. First operand 1424 states and 2212 transitions. Second operand has 36 states, 36 states have (on average 4.972222222222222) internal successors, (179), 33 states have internal predecessors, (179), 9 states have call successors, (86), 9 states have call predecessors, (86), 14 states have return successors, (86), 9 states have call predecessors, (86), 9 states have call successors, (86)