./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/max20-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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/reducercommutativity/max20-1.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 da9ac0c3f4abc9a6d9e8b4bf1276cf60fb65e65c55d9f94968d51682bf71ef87 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 16:54:55,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 16:54:55,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 16:54:55,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 16:54:55,931 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 16:54:55,958 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 16:54:55,959 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 16:54:55,959 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 16:54:55,959 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 16:54:55,959 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 16:54:55,960 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 16:54:55,960 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 16:54:55,960 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 16:54:55,960 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 16:54:55,960 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 16:54:55,960 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 16:54:55,960 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 16:54:55,960 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 16:54:55,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 16:54:55,961 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 16:54:55,962 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 16:54:55,962 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 16:54:55,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 16:54:55,963 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 16:54:55,963 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 16:54:55,963 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 16:54:55,963 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 16:54:55,963 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 16:54:55,963 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 16:54:55,963 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 16:54:55,964 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 16:54:55,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 16:54:55,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:54:55,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 16:54:55,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 16:54:55,964 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 16:54:55,965 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 16:54:55,965 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 16:54:55,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 16:54:55,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 16:54:55,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 16:54:55,965 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 16:54:55,965 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 16:54:55,965 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 -> da9ac0c3f4abc9a6d9e8b4bf1276cf60fb65e65c55d9f94968d51682bf71ef87 [2025-02-07 16:54:56,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 16:54:56,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 16:54:56,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 16:54:56,250 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 16:54:56,250 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 16:54:56,251 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/max20-1.i [2025-02-07 16:54:57,456 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3b8f44796/beb695c903514b32a853f00aa7459add/FLAGf62a43b87 [2025-02-07 16:54:57,701 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 16:54:57,701 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max20-1.i [2025-02-07 16:54:57,707 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3b8f44796/beb695c903514b32a853f00aa7459add/FLAGf62a43b87 [2025-02-07 16:54:57,719 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3b8f44796/beb695c903514b32a853f00aa7459add [2025-02-07 16:54:57,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 16:54:57,722 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 16:54:57,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 16:54:57,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 16:54:57,726 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 16:54:57,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:54:57" (1/1) ... [2025-02-07 16:54:57,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40052ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57, skipping insertion in model container [2025-02-07 16:54:57,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:54:57" (1/1) ... [2025-02-07 16:54:57,742 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 16:54:57,889 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/reducercommutativity/max20-1.i[1290,1303] [2025-02-07 16:54:57,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:54:57,903 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 16:54:57,924 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/reducercommutativity/max20-1.i[1290,1303] [2025-02-07 16:54:57,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:54:57,946 INFO L204 MainTranslator]: Completed translation [2025-02-07 16:54:57,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57 WrapperNode [2025-02-07 16:54:57,947 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 16:54:57,948 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 16:54:57,948 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 16:54:57,949 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 16:54:57,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57" (1/1) ... [2025-02-07 16:54:57,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57" (1/1) ... [2025-02-07 16:54:57,982 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2025-02-07 16:54:57,983 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 16:54:57,983 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 16:54:57,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 16:54:57,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 16:54:57,990 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57" (1/1) ... [2025-02-07 16:54:57,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57" (1/1) ... [2025-02-07 16:54:57,992 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57" (1/1) ... [2025-02-07 16:54:58,007 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2025-02-07 16:54:58,008 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57" (1/1) ... [2025-02-07 16:54:58,008 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57" (1/1) ... [2025-02-07 16:54:58,017 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57" (1/1) ... [2025-02-07 16:54:58,018 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57" (1/1) ... [2025-02-07 16:54:58,019 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57" (1/1) ... [2025-02-07 16:54:58,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57" (1/1) ... [2025-02-07 16:54:58,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 16:54:58,026 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 16:54:58,026 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 16:54:58,026 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 16:54:58,027 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57" (1/1) ... [2025-02-07 16:54:58,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:54:58,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:54:58,051 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) [2025-02-07 16:54:58,054 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 [2025-02-07 16:54:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 16:54:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure max [2025-02-07 16:54:58,075 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2025-02-07 16:54:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 16:54:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 16:54:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 16:54:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 16:54:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 16:54:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 16:54:58,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 16:54:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 16:54:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 16:54:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 16:54:58,142 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 16:54:58,144 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 16:54:58,277 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset; [2025-02-07 16:54:58,284 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2025-02-07 16:54:58,284 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 16:54:58,292 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 16:54:58,292 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 16:54:58,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:54:58 BoogieIcfgContainer [2025-02-07 16:54:58,292 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 16:54:58,294 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 16:54:58,295 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 16:54:58,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 16:54:58,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 04:54:57" (1/3) ... [2025-02-07 16:54:58,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76919c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:54:58, skipping insertion in model container [2025-02-07 16:54:58,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:57" (2/3) ... [2025-02-07 16:54:58,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76919c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:54:58, skipping insertion in model container [2025-02-07 16:54:58,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:54:58" (3/3) ... [2025-02-07 16:54:58,300 INFO L128 eAbstractionObserver]: Analyzing ICFG max20-1.i [2025-02-07 16:54:58,313 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 16:54:58,316 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG max20-1.i that has 2 procedures, 22 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-07 16:54:58,363 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 16:54:58,372 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;@33e70ed0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 16:54:58,372 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 16:54:58,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 16:54:58,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-07 16:54:58,380 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:54:58,380 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:54:58,381 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:54:58,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:54:58,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1091540240, now seen corresponding path program 1 times [2025-02-07 16:54:58,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:54:58,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229421186] [2025-02-07 16:54:58,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:54:58,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:54:58,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-07 16:54:58,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 16:54:58,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:54:58,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 16:54:58,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:54:58,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229421186] [2025-02-07 16:54:58,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229421186] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:54:58,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:54:58,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 16:54:58,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34988517] [2025-02-07 16:54:58,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:54:58,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:54:58,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:54:58,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:54:58,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:54:58,637 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-07 16:54:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:54:58,657 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2025-02-07 16:54:58,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:54:58,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2025-02-07 16:54:58,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:54:58,663 INFO L225 Difference]: With dead ends: 43 [2025-02-07 16:54:58,663 INFO L226 Difference]: Without dead ends: 19 [2025-02-07 16:54:58,666 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 [2025-02-07 16:54:58,669 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 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 [2025-02-07 16:54:58,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:54:58,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-02-07 16:54:58,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-02-07 16:54:58,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 16:54:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2025-02-07 16:54:58,703 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 23 [2025-02-07 16:54:58,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:54:58,704 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2025-02-07 16:54:58,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-07 16:54:58,704 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2025-02-07 16:54:58,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-07 16:54:58,705 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:54:58,705 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:54:58,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 16:54:58,705 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:54:58,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:54:58,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1726708840, now seen corresponding path program 1 times [2025-02-07 16:54:58,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:54:58,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768576108] [2025-02-07 16:54:58,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:54:58,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:54:58,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-07 16:54:58,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-07 16:54:58,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:54:58,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:58,886 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 16:54:58,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:54:58,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768576108] [2025-02-07 16:54:58,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768576108] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:54:58,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108549467] [2025-02-07 16:54:58,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:54:58,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:54:58,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:54:58,889 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) [2025-02-07 16:54:58,891 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 [2025-02-07 16:54:58,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-07 16:54:58,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-07 16:54:58,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:54:58,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:58,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-07 16:54:58,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:54:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 16:54:59,007 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 16:54:59,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108549467] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:54:59,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 16:54:59,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-07 16:54:59,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948229162] [2025-02-07 16:54:59,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:54:59,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:54:59,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:54:59,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:54:59,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:54:59,012 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 16:54:59,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:54:59,026 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2025-02-07 16:54:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:54:59,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2025-02-07 16:54:59,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:54:59,028 INFO L225 Difference]: With dead ends: 37 [2025-02-07 16:54:59,029 INFO L226 Difference]: Without dead ends: 22 [2025-02-07 16:54:59,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:54:59,030 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:54:59,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:54:59,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-07 16:54:59,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2025-02-07 16:54:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 16:54:59,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2025-02-07 16:54:59,035 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 24 [2025-02-07 16:54:59,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:54:59,036 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2025-02-07 16:54:59,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 16:54:59,036 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2025-02-07 16:54:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-07 16:54:59,036 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:54:59,036 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:54:59,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 16:54:59,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:54:59,237 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:54:59,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:54:59,238 INFO L85 PathProgramCache]: Analyzing trace with hash 475225173, now seen corresponding path program 1 times [2025-02-07 16:54:59,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:54:59,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177704844] [2025-02-07 16:54:59,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:54:59,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:54:59,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-07 16:54:59,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 16:54:59,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:54:59,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-07 16:54:59,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:54:59,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177704844] [2025-02-07 16:54:59,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177704844] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:54:59,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205491281] [2025-02-07 16:54:59,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:54:59,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:54:59,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:54:59,351 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) [2025-02-07 16:54:59,353 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 [2025-02-07 16:54:59,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-07 16:54:59,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 16:54:59,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:54:59,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:59,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-07 16:54:59,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:54:59,443 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-07 16:54:59,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 16:54:59,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205491281] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:54:59,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 16:54:59,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-07 16:54:59,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395003028] [2025-02-07 16:54:59,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:54:59,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:54:59,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:54:59,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:54:59,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:54:59,445 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 16:54:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:54:59,454 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2025-02-07 16:54:59,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:54:59,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2025-02-07 16:54:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:54:59,455 INFO L225 Difference]: With dead ends: 33 [2025-02-07 16:54:59,455 INFO L226 Difference]: Without dead ends: 21 [2025-02-07 16:54:59,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:54:59,456 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 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 [2025-02-07 16:54:59,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:54:59,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-02-07 16:54:59,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-02-07 16:54:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 16:54:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2025-02-07 16:54:59,460 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 33 [2025-02-07 16:54:59,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:54:59,461 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2025-02-07 16:54:59,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 16:54:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2025-02-07 16:54:59,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-07 16:54:59,462 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:54:59,462 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:54:59,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-07 16:54:59,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:54:59,663 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:54:59,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:54:59,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1988187491, now seen corresponding path program 1 times [2025-02-07 16:54:59,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:54:59,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958137867] [2025-02-07 16:54:59,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:54:59,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:54:59,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-07 16:54:59,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-07 16:54:59,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:54:59,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 16:54:59,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:54:59,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958137867] [2025-02-07 16:54:59,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958137867] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:54:59,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472290665] [2025-02-07 16:54:59,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:54:59,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:54:59,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:54:59,763 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) [2025-02-07 16:54:59,766 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 [2025-02-07 16:54:59,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-07 16:54:59,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-07 16:54:59,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:54:59,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:59,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 16:54:59,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:54:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 16:54:59,884 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:54:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 16:54:59,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472290665] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:54:59,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:54:59,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2025-02-07 16:54:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645075069] [2025-02-07 16:54:59,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:54:59,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-07 16:54:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:54:59,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-07 16:54:59,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 16:54:59,931 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-07 16:54:59,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:54:59,944 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2025-02-07 16:54:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 16:54:59,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 34 [2025-02-07 16:54:59,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:54:59,945 INFO L225 Difference]: With dead ends: 42 [2025-02-07 16:54:59,945 INFO L226 Difference]: Without dead ends: 24 [2025-02-07 16:54:59,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 16:54:59,946 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:54:59,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:54:59,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-02-07 16:54:59,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-02-07 16:54:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 16:54:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2025-02-07 16:54:59,954 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 34 [2025-02-07 16:54:59,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:54:59,954 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2025-02-07 16:54:59,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-07 16:54:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2025-02-07 16:54:59,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-07 16:54:59,954 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:54:59,955 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:54:59,962 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 [2025-02-07 16:55:00,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:00,156 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:55:00,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:55:00,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1132745227, now seen corresponding path program 2 times [2025-02-07 16:55:00,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:55:00,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933561668] [2025-02-07 16:55:00,156 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:55:00,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:55:00,173 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-07 16:55:00,193 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-07 16:55:00,194 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:55:00,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:00,274 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-07 16:55:00,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:55:00,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933561668] [2025-02-07 16:55:00,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933561668] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:55:00,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437317800] [2025-02-07 16:55:00,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:55:00,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:00,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:55:00,278 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) [2025-02-07 16:55:00,280 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 [2025-02-07 16:55:00,329 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-07 16:55:00,357 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-07 16:55:00,357 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:55:00,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:00,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 16:55:00,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:55:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 16:55:00,425 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:55:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 16:55:00,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437317800] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:55:00,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:55:00,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2025-02-07 16:55:00,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935860876] [2025-02-07 16:55:00,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:55:00,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-07 16:55:00,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:55:00,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-07 16:55:00,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-07 16:55:00,527 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 16:55:00,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:55:00,571 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2025-02-07 16:55:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-07 16:55:00,571 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 37 [2025-02-07 16:55:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:55:00,572 INFO L225 Difference]: With dead ends: 53 [2025-02-07 16:55:00,572 INFO L226 Difference]: Without dead ends: 35 [2025-02-07 16:55:00,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-07 16:55:00,573 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:55:00,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 87 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:55:00,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-02-07 16:55:00,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2025-02-07 16:55:00,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 16:55:00,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2025-02-07 16:55:00,578 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 37 [2025-02-07 16:55:00,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:55:00,578 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2025-02-07 16:55:00,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 16:55:00,578 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2025-02-07 16:55:00,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-07 16:55:00,579 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:55:00,579 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:55:00,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-07 16:55:00,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:00,780 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:55:00,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:55:00,780 INFO L85 PathProgramCache]: Analyzing trace with hash -191469340, now seen corresponding path program 3 times [2025-02-07 16:55:00,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:55:00,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813105597] [2025-02-07 16:55:00,781 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:55:00,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:55:00,804 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 52 statements into 6 equivalence classes. [2025-02-07 16:55:00,826 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 52 statements. [2025-02-07 16:55:00,826 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 16:55:00,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2025-02-07 16:55:00,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:55:00,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813105597] [2025-02-07 16:55:00,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813105597] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:55:00,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327133122] [2025-02-07 16:55:00,880 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:55:00,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:00,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:55:00,883 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) [2025-02-07 16:55:00,885 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 [2025-02-07 16:55:00,948 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 52 statements into 6 equivalence classes. [2025-02-07 16:55:00,975 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 52 statements. [2025-02-07 16:55:00,975 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 16:55:00,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:00,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 16:55:00,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:55:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-02-07 16:55:00,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:55:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2025-02-07 16:55:01,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327133122] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:55:01,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:55:01,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-07 16:55:01,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802883082] [2025-02-07 16:55:01,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:55:01,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-07 16:55:01,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:55:01,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-07 16:55:01,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 16:55:01,022 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 16:55:01,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:55:01,039 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2025-02-07 16:55:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 16:55:01,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2025-02-07 16:55:01,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:55:01,041 INFO L225 Difference]: With dead ends: 51 [2025-02-07 16:55:01,041 INFO L226 Difference]: Without dead ends: 36 [2025-02-07 16:55:01,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 16:55:01,043 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:55:01,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:55:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-07 16:55:01,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-02-07 16:55:01,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 16:55:01,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2025-02-07 16:55:01,054 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 52 [2025-02-07 16:55:01,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:55:01,054 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2025-02-07 16:55:01,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 16:55:01,054 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2025-02-07 16:55:01,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-07 16:55:01,055 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:55:01,055 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:55:01,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-07 16:55:01,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:01,260 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:55:01,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:55:01,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1434208368, now seen corresponding path program 4 times [2025-02-07 16:55:01,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:55:01,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847793329] [2025-02-07 16:55:01,261 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:55:01,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:55:01,285 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 55 statements into 2 equivalence classes. [2025-02-07 16:55:01,301 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-02-07 16:55:01,301 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:55:01,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2025-02-07 16:55:01,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:55:01,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847793329] [2025-02-07 16:55:01,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847793329] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:55:01,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071689639] [2025-02-07 16:55:01,383 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:55:01,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:01,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:55:01,386 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:55:01,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-07 16:55:01,462 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 55 statements into 2 equivalence classes. [2025-02-07 16:55:01,504 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-02-07 16:55:01,504 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:55:01,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:01,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-07 16:55:01,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:55:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-02-07 16:55:01,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:55:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2025-02-07 16:55:01,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071689639] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:55:01,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:55:01,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-07 16:55:01,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739929983] [2025-02-07 16:55:01,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:55:01,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-07 16:55:01,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:55:01,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-07 16:55:01,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-07 16:55:01,574 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 16:55:01,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:55:01,623 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2025-02-07 16:55:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 16:55:01,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2025-02-07 16:55:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:55:01,624 INFO L225 Difference]: With dead ends: 71 [2025-02-07 16:55:01,624 INFO L226 Difference]: Without dead ends: 48 [2025-02-07 16:55:01,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-07 16:55:01,625 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:55:01,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 59 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:55:01,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-02-07 16:55:01,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2025-02-07 16:55:01,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 16:55:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2025-02-07 16:55:01,630 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 55 [2025-02-07 16:55:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:55:01,631 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2025-02-07 16:55:01,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 16:55:01,631 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2025-02-07 16:55:01,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-02-07 16:55:01,632 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:55:01,632 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 10, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:55:01,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-07 16:55:01,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-07 16:55:01,836 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:55:01,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:55:01,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1580294960, now seen corresponding path program 5 times [2025-02-07 16:55:01,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:55:01,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543787732] [2025-02-07 16:55:01,837 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 16:55:01,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:55:01,857 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 91 statements into 14 equivalence classes. [2025-02-07 16:55:01,966 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 81 of 91 statements. [2025-02-07 16:55:01,966 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-02-07 16:55:01,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:02,173 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 123 proven. 174 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2025-02-07 16:55:02,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:55:02,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543787732] [2025-02-07 16:55:02,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543787732] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:55:02,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598100424] [2025-02-07 16:55:02,174 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 16:55:02,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:02,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:55:02,178 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:55:02,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-07 16:55:02,258 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 91 statements into 14 equivalence classes. [2025-02-07 16:55:02,578 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 81 of 91 statements. [2025-02-07 16:55:02,578 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-02-07 16:55:02,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:02,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 16:55:02,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:55:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 244 proven. 51 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2025-02-07 16:55:02,619 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:55:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2025-02-07 16:55:02,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598100424] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:55:02,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:55:02,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-02-07 16:55:02,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903571195] [2025-02-07 16:55:02,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:55:02,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-07 16:55:02,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:55:02,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-07 16:55:02,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-02-07 16:55:02,754 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 16:55:02,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:55:02,823 INFO L93 Difference]: Finished difference Result 107 states and 144 transitions. [2025-02-07 16:55:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-07 16:55:02,823 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2025-02-07 16:55:02,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:55:02,824 INFO L225 Difference]: With dead ends: 107 [2025-02-07 16:55:02,825 INFO L226 Difference]: Without dead ends: 72 [2025-02-07 16:55:02,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-02-07 16:55:02,826 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 16:55:02,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 118 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 16:55:02,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-02-07 16:55:02,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2025-02-07 16:55:02,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 67 states have internal predecessors, (84), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 16:55:02,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2025-02-07 16:55:02,841 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 91 [2025-02-07 16:55:02,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:55:02,841 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2025-02-07 16:55:02,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 16:55:02,842 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2025-02-07 16:55:02,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-02-07 16:55:02,843 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:55:02,843 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 10, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:55:02,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-07 16:55:03,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:03,047 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:55:03,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:55:03,047 INFO L85 PathProgramCache]: Analyzing trace with hash -442988720, now seen corresponding path program 6 times [2025-02-07 16:55:03,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:55:03,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708606883] [2025-02-07 16:55:03,047 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 16:55:03,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:55:03,076 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 163 statements into 30 equivalence classes. [2025-02-07 16:55:03,120 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 51 of 163 statements. [2025-02-07 16:55:03,120 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-07 16:55:03,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-02-07 16:55:03,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:55:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708606883] [2025-02-07 16:55:03,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708606883] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:55:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658991846] [2025-02-07 16:55:03,233 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 16:55:03,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:03,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:55:03,235 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:55:03,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-07 16:55:03,337 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 163 statements into 30 equivalence classes. [2025-02-07 16:55:03,470 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 51 of 163 statements. [2025-02-07 16:55:03,470 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-07 16:55:03,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:03,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 16:55:03,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:55:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 1240 proven. 10 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2025-02-07 16:55:03,510 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:55:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-02-07 16:55:03,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658991846] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:55:03,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:55:03,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-07 16:55:03,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250692960] [2025-02-07 16:55:03,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:55:03,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 16:55:03,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:55:03,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 16:55:03,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-07 16:55:03,583 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 16:55:03,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:55:03,605 INFO L93 Difference]: Finished difference Result 129 states and 167 transitions. [2025-02-07 16:55:03,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 16:55:03,607 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 163 [2025-02-07 16:55:03,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:55:03,608 INFO L225 Difference]: With dead ends: 129 [2025-02-07 16:55:03,608 INFO L226 Difference]: Without dead ends: 78 [2025-02-07 16:55:03,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-07 16:55:03,609 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:55:03,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:55:03,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-02-07 16:55:03,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2025-02-07 16:55:03,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 73 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 16:55:03,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2025-02-07 16:55:03,618 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 163 [2025-02-07 16:55:03,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:55:03,618 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2025-02-07 16:55:03,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 16:55:03,619 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2025-02-07 16:55:03,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-02-07 16:55:03,620 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:55:03,620 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 10, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:55:03,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-07 16:55:03,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:03,823 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:55:03,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:55:03,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1217935664, now seen corresponding path program 7 times [2025-02-07 16:55:03,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:55:03,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213855991] [2025-02-07 16:55:03,824 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 16:55:03,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:55:03,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-02-07 16:55:03,884 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-02-07 16:55:03,884 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:55:03,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2831 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-02-07 16:55:04,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:55:04,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213855991] [2025-02-07 16:55:04,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213855991] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:55:04,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933650440] [2025-02-07 16:55:04,349 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 16:55:04,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:04,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:55:04,351 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:55:04,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-07 16:55:04,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-02-07 16:55:04,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-02-07 16:55:04,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:55:04,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:04,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-07 16:55:04,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:55:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 2831 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-02-07 16:55:04,624 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:55:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2831 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-02-07 16:55:04,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933650440] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:55:04,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:55:04,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 23 [2025-02-07 16:55:04,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934535239] [2025-02-07 16:55:04,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:55:04,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-07 16:55:04,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:55:04,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-07 16:55:04,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-02-07 16:55:04,846 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-07 16:55:04,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:55:04,874 INFO L93 Difference]: Finished difference Result 154 states and 199 transitions. [2025-02-07 16:55:04,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-07 16:55:04,875 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 169 [2025-02-07 16:55:04,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:55:04,876 INFO L225 Difference]: With dead ends: 154 [2025-02-07 16:55:04,876 INFO L226 Difference]: Without dead ends: 88 [2025-02-07 16:55:04,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 326 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-02-07 16:55:04,877 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:55:04,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:55:04,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-02-07 16:55:04,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2025-02-07 16:55:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.2048192771084338) internal successors, (100), 83 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 16:55:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 106 transitions. [2025-02-07 16:55:04,889 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 106 transitions. Word has length 169 [2025-02-07 16:55:04,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:55:04,890 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 106 transitions. [2025-02-07 16:55:04,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-07 16:55:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 106 transitions. [2025-02-07 16:55:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2025-02-07 16:55:04,893 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:55:04,893 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 20, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:55:04,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-07 16:55:05,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:05,093 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:55:05,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:55:05,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1181585456, now seen corresponding path program 8 times [2025-02-07 16:55:05,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:55:05,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259185205] [2025-02-07 16:55:05,094 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:55:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:55:05,133 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 179 statements into 2 equivalence classes. [2025-02-07 16:55:05,189 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 179 of 179 statements. [2025-02-07 16:55:05,189 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:55:05,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2986 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2025-02-07 16:55:05,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:55:05,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259185205] [2025-02-07 16:55:05,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259185205] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:55:05,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829400861] [2025-02-07 16:55:05,827 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:55:05,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:05,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:55:05,832 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:55:05,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-07 16:55:05,962 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 179 statements into 2 equivalence classes. [2025-02-07 16:55:06,069 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 179 of 179 statements. [2025-02-07 16:55:06,069 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:55:06,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:06,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-07 16:55:06,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:55:06,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2986 backedges. 1236 proven. 287 refuted. 0 times theorem prover too weak. 1463 trivial. 0 not checked. [2025-02-07 16:55:06,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:55:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2986 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2025-02-07 16:55:06,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829400861] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:55:06,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:55:06,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2025-02-07 16:55:06,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317858778] [2025-02-07 16:55:06,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:55:06,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-07 16:55:06,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:55:06,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-07 16:55:06,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-02-07 16:55:06,432 INFO L87 Difference]: Start difference. First operand 88 states and 106 transitions. Second operand has 23 states, 23 states have (on average 3.782608695652174) internal successors, (87), 23 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 16:55:06,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:55:06,517 INFO L93 Difference]: Finished difference Result 171 states and 220 transitions. [2025-02-07 16:55:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-07 16:55:06,517 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.782608695652174) internal successors, (87), 23 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2025-02-07 16:55:06,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:55:06,518 INFO L225 Difference]: With dead ends: 171 [2025-02-07 16:55:06,518 INFO L226 Difference]: Without dead ends: 106 [2025-02-07 16:55:06,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 342 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2025-02-07 16:55:06,522 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 54 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 16:55:06,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 125 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 16:55:06,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-02-07 16:55:06,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2025-02-07 16:55:06,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 101 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 16:55:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 130 transitions. [2025-02-07 16:55:06,537 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 130 transitions. Word has length 179 [2025-02-07 16:55:06,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:55:06,538 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 130 transitions. [2025-02-07 16:55:06,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.782608695652174) internal successors, (87), 23 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 16:55:06,538 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 130 transitions. [2025-02-07 16:55:06,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2025-02-07 16:55:06,539 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:55:06,540 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 20, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:55:06,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-07 16:55:06,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:06,740 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:55:06,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:55:06,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1416430672, now seen corresponding path program 9 times [2025-02-07 16:55:06,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:55:06,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351459912] [2025-02-07 16:55:06,741 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:55:06,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:55:06,778 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 233 statements into 42 equivalence classes. [2025-02-07 16:55:06,880 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 72 of 233 statements. [2025-02-07 16:55:06,880 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-07 16:55:06,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:07,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5767 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5712 trivial. 0 not checked. [2025-02-07 16:55:07,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:55:07,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351459912] [2025-02-07 16:55:07,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351459912] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:55:07,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653813566] [2025-02-07 16:55:07,105 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:55:07,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:07,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:55:07,108 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:55:07,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-07 16:55:07,268 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 233 statements into 42 equivalence classes. [2025-02-07 16:55:07,636 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 72 of 233 statements. [2025-02-07 16:55:07,636 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-07 16:55:07,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:07,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-07 16:55:07,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:55:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5767 backedges. 2508 proven. 55 refuted. 0 times theorem prover too weak. 3204 trivial. 0 not checked. [2025-02-07 16:55:07,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:55:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5767 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5712 trivial. 0 not checked. [2025-02-07 16:55:07,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653813566] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:55:07,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:55:07,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 23 [2025-02-07 16:55:07,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962364639] [2025-02-07 16:55:07,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:55:07,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-07 16:55:07,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:55:07,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-07 16:55:07,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2025-02-07 16:55:07,884 INFO L87 Difference]: Start difference. First operand 106 states and 130 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 16:55:07,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:55:07,921 INFO L93 Difference]: Finished difference Result 184 states and 237 transitions. [2025-02-07 16:55:07,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-07 16:55:07,921 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 233 [2025-02-07 16:55:07,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:55:07,923 INFO L225 Difference]: With dead ends: 184 [2025-02-07 16:55:07,923 INFO L226 Difference]: Without dead ends: 115 [2025-02-07 16:55:07,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 453 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2025-02-07 16:55:07,924 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:55:07,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 107 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:55:07,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-02-07 16:55:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2025-02-07 16:55:07,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.209090909090909) internal successors, (133), 110 states have internal predecessors, (133), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 16:55:07,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 139 transitions. [2025-02-07 16:55:07,931 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 139 transitions. Word has length 233 [2025-02-07 16:55:07,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:55:07,931 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 139 transitions. [2025-02-07 16:55:07,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 23 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 16:55:07,932 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 139 transitions. [2025-02-07 16:55:07,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2025-02-07 16:55:07,933 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:55:07,934 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 20, 19, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:55:07,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-07 16:55:08,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-07 16:55:08,134 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:55:08,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:55:08,135 INFO L85 PathProgramCache]: Analyzing trace with hash 832829188, now seen corresponding path program 10 times [2025-02-07 16:55:08,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:55:08,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035351813] [2025-02-07 16:55:08,135 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:55:08,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:55:08,174 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 242 statements into 2 equivalence classes. [2025-02-07 16:55:08,467 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 242 of 242 statements. [2025-02-07 16:55:08,467 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:55:08,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:11,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5902 backedges. 87 proven. 3127 refuted. 0 times theorem prover too weak. 2688 trivial. 0 not checked. [2025-02-07 16:55:11,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:55:11,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035351813] [2025-02-07 16:55:11,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035351813] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:55:11,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216594552] [2025-02-07 16:55:11,472 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:55:11,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:11,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:55:11,474 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:55:11,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-07 16:55:11,642 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 242 statements into 2 equivalence classes. [2025-02-07 16:55:11,786 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 242 of 242 statements. [2025-02-07 16:55:11,786 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:55:11,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:11,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-02-07 16:55:11,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:55:11,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-07 16:55:12,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:12,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 20 [2025-02-07 16:55:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 5902 backedges. 3542 proven. 380 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2025-02-07 16:55:12,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:55:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5902 backedges. 1332 proven. 2587 refuted. 0 times theorem prover too weak. 1983 trivial. 0 not checked. [2025-02-07 16:55:13,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216594552] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:55:13,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:55:13,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 14] total 35 [2025-02-07 16:55:13,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388586847] [2025-02-07 16:55:13,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:55:13,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-07 16:55:13,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:55:13,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-07 16:55:13,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1007, Unknown=0, NotChecked=0, Total=1190 [2025-02-07 16:55:13,377 INFO L87 Difference]: Start difference. First operand 115 states and 139 transitions. Second operand has 35 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-07 16:55:13,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:55:13,983 INFO L93 Difference]: Finished difference Result 401 states and 508 transitions. [2025-02-07 16:55:13,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-07 16:55:13,983 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Word has length 242 [2025-02-07 16:55:13,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:55:13,985 INFO L225 Difference]: With dead ends: 401 [2025-02-07 16:55:13,985 INFO L226 Difference]: Without dead ends: 253 [2025-02-07 16:55:13,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 465 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=266, Invalid=1374, Unknown=0, NotChecked=0, Total=1640 [2025-02-07 16:55:13,987 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 43 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-07 16:55:13,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 170 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-07 16:55:13,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2025-02-07 16:55:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 245. [2025-02-07 16:55:14,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 237 states have (on average 1.270042194092827) internal successors, (301), 238 states have internal predecessors, (301), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2025-02-07 16:55:14,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 312 transitions. [2025-02-07 16:55:14,014 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 312 transitions. Word has length 242 [2025-02-07 16:55:14,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:55:14,014 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 312 transitions. [2025-02-07 16:55:14,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 2.40625) internal successors, (77), 31 states have internal predecessors, (77), 6 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2025-02-07 16:55:14,014 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 312 transitions. [2025-02-07 16:55:14,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2025-02-07 16:55:14,017 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:55:14,017 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 59, 20, 19, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:55:14,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-07 16:55:14,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:14,221 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:55:14,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:55:14,221 INFO L85 PathProgramCache]: Analyzing trace with hash 700505443, now seen corresponding path program 1 times [2025-02-07 16:55:14,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:55:14,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837935988] [2025-02-07 16:55:14,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:55:14,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:55:14,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 242 statements into 1 equivalence classes. [2025-02-07 16:55:14,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 242 of 242 statements. [2025-02-07 16:55:14,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:55:14,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5902 backedges. 1155 proven. 3950 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2025-02-07 16:55:32,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:55:32,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837935988] [2025-02-07 16:55:32,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837935988] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:55:32,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10597173] [2025-02-07 16:55:32,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:55:32,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:55:32,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:55:32,182 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:55:32,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-07 16:55:32,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 242 statements into 1 equivalence classes. [2025-02-07 16:55:32,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 242 of 242 statements. [2025-02-07 16:55:32,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:55:32,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:32,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 336 conjuncts are in the unsatisfiable core [2025-02-07 16:55:32,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:55:32,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-07 16:55:43,444 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:43,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 17 select indices, 17 select index equivalence classes, 171 disjoint index pairs (out of 136 index pairs), introduced 17 new quantified variables, introduced 136 case distinctions, treesize of input 231 treesize of output 200 [2025-02-07 16:55:50,647 INFO L349 Elim1Store]: treesize reduction 136, result has 0.7 percent of original size [2025-02-07 16:55:50,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 36 select indices, 36 select index equivalence classes, 171 disjoint index pairs (out of 630 index pairs), introduced 36 new quantified variables, introduced 630 case distinctions, treesize of input 465 treesize of output 419 [2025-02-07 16:55:51,274 INFO L349 Elim1Store]: treesize reduction 136, result has 0.7 percent of original size [2025-02-07 16:55:51,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 35 select indices, 35 select index equivalence classes, 171 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 595 case distinctions, treesize of input 454 treesize of output 416 [2025-02-07 16:55:51,876 INFO L349 Elim1Store]: treesize reduction 136, result has 0.7 percent of original size [2025-02-07 16:55:51,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 35 select indices, 35 select index equivalence classes, 153 disjoint index pairs (out of 595 index pairs), introduced 35 new quantified variables, introduced 595 case distinctions, treesize of input 454 treesize of output 409 [2025-02-07 16:55:52,575 INFO L349 Elim1Store]: treesize reduction 144, result has 12.2 percent of original size [2025-02-07 16:55:52,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 34 select indices, 34 select index equivalence classes, 136 disjoint index pairs (out of 561 index pairs), introduced 34 new quantified variables, introduced 562 case distinctions, treesize of input 441 treesize of output 409 [2025-02-07 16:55:53,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:53,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 220 treesize of output 186 [2025-02-07 16:55:53,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:53,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 207 treesize of output 174 [2025-02-07 16:55:53,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:53,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 91 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 194 treesize of output 162 [2025-02-07 16:55:53,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:53,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 78 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 181 treesize of output 150 [2025-02-07 16:55:54,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:54,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 168 treesize of output 138 [2025-02-07 16:55:54,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:54,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 155 treesize of output 126 [2025-02-07 16:55:54,796 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:54,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 142 treesize of output 114 [2025-02-07 16:55:55,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:55,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 129 treesize of output 102 [2025-02-07 16:55:55,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:55,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 116 treesize of output 90 [2025-02-07 16:55:55,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:55,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 103 treesize of output 78 [2025-02-07 16:55:55,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:55,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 90 treesize of output 66 [2025-02-07 16:55:55,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:55,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 54 [2025-02-07 16:55:56,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:56,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 42 [2025-02-07 16:55:56,335 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:56,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 30 [2025-02-07 16:55:56,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:56,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 25 [2025-02-07 16:55:56,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:55:56,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2025-02-07 16:56:02,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5902 backedges. 23 proven. 5487 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2025-02-07 16:56:02,001 INFO L312 TraceCheckSpWp]: Computing backward predicates...