./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/mono-crafted_13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/mono-crafted_13.c -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 7a1978d5df6cab978f117700980416150440efa7bda2d4cde0711b48b83f0666 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 14:54:41,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 14:54:41,921 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 14:54:41,928 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 14:54:41,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 14:54:41,956 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 14:54:41,957 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 14:54:41,957 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 14:54:41,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 14:54:41,958 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 14:54:41,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 14:54:41,958 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 14:54:41,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 14:54:41,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 14:54:41,959 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 14:54:41,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 14:54:41,959 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 14:54:41,959 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 14:54:41,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 14:54:41,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 14:54:41,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 14:54:41,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 14:54:41,959 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 14:54:41,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 14:54:41,960 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 14:54:41,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 14:54:41,960 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 14:54:41,960 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 14:54:41,960 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 14:54:41,960 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 14:54:41,960 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 14:54:41,961 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 14:54:41,961 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 14:54:41,961 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 14:54:41,961 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 14:54:41,961 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 14:54:41,961 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 14:54:41,961 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 14:54:41,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 14:54:41,962 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 14:54:41,962 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 14:54:41,962 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 14:54:41,962 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 14:54:41,962 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 -> 7a1978d5df6cab978f117700980416150440efa7bda2d4cde0711b48b83f0666 [2025-02-05 14:54:42,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 14:54:42,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 14:54:42,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 14:54:42,226 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 14:54:42,226 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 14:54:42,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/mono-crafted_13.c [2025-02-05 14:54:43,521 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8436a22ae/6bc494b7bab3446f8db8f36600a2a95d/FLAG2ac7d35cb [2025-02-05 14:54:43,754 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 14:54:43,755 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/mono-crafted_13.c [2025-02-05 14:54:43,768 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8436a22ae/6bc494b7bab3446f8db8f36600a2a95d/FLAG2ac7d35cb [2025-02-05 14:54:43,786 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8436a22ae/6bc494b7bab3446f8db8f36600a2a95d [2025-02-05 14:54:43,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 14:54:43,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 14:54:43,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 14:54:43,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 14:54:43,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 14:54:43,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 02:54:43" (1/1) ... [2025-02-05 14:54:43,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1151bd9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43, skipping insertion in model container [2025-02-05 14:54:43,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 02:54:43" (1/1) ... [2025-02-05 14:54:43,808 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 14:54:43,942 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/loops-crafted-1/mono-crafted_13.c[319,332] [2025-02-05 14:54:43,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 14:54:43,970 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 14:54:43,980 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/loops-crafted-1/mono-crafted_13.c[319,332] [2025-02-05 14:54:43,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 14:54:43,996 INFO L204 MainTranslator]: Completed translation [2025-02-05 14:54:43,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43 WrapperNode [2025-02-05 14:54:43,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 14:54:44,000 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 14:54:44,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 14:54:44,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 14:54:44,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43" (1/1) ... [2025-02-05 14:54:44,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43" (1/1) ... [2025-02-05 14:54:44,031 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2025-02-05 14:54:44,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 14:54:44,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 14:54:44,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 14:54:44,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 14:54:44,038 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43" (1/1) ... [2025-02-05 14:54:44,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43" (1/1) ... [2025-02-05 14:54:44,040 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43" (1/1) ... [2025-02-05 14:54:44,049 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-05 14:54:44,053 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43" (1/1) ... [2025-02-05 14:54:44,053 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43" (1/1) ... [2025-02-05 14:54:44,055 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43" (1/1) ... [2025-02-05 14:54:44,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43" (1/1) ... [2025-02-05 14:54:44,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43" (1/1) ... [2025-02-05 14:54:44,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43" (1/1) ... [2025-02-05 14:54:44,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 14:54:44,063 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 14:54:44,063 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 14:54:44,063 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 14:54:44,064 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43" (1/1) ... [2025-02-05 14:54:44,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 14:54:44,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:54:44,097 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) [2025-02-05 14:54:44,105 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 [2025-02-05 14:54:44,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 14:54:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 14:54:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 14:54:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 14:54:44,172 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 14:54:44,173 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 14:54:44,281 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-02-05 14:54:44,281 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 14:54:44,292 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 14:54:44,292 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 14:54:44,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 02:54:44 BoogieIcfgContainer [2025-02-05 14:54:44,293 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 14:54:44,295 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 14:54:44,295 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 14:54:44,300 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 14:54:44,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 02:54:43" (1/3) ... [2025-02-05 14:54:44,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6bd4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 02:54:44, skipping insertion in model container [2025-02-05 14:54:44,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 02:54:43" (2/3) ... [2025-02-05 14:54:44,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6bd4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 02:54:44, skipping insertion in model container [2025-02-05 14:54:44,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 02:54:44" (3/3) ... [2025-02-05 14:54:44,303 INFO L128 eAbstractionObserver]: Analyzing ICFG mono-crafted_13.c [2025-02-05 14:54:44,314 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 14:54:44,315 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mono-crafted_13.c that has 1 procedures, 12 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-05 14:54:44,356 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 14:54:44,366 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;@530e552f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 14:54:44,366 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 14:54:44,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:44,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-05 14:54:44,376 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:54:44,377 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-05 14:54:44,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:54:44,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:54:44,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1300681946, now seen corresponding path program 1 times [2025-02-05 14:54:44,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:54:44,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880475831] [2025-02-05 14:54:44,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:54:44,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:54:44,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-05 14:54:44,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-05 14:54:44,474 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:54:44,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 14:54:44,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:54:44,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880475831] [2025-02-05 14:54:44,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880475831] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 14:54:44,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 14:54:44,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 14:54:44,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053328835] [2025-02-05 14:54:44,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 14:54:44,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 14:54:44,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:54:44,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 14:54:44,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 14:54:44,602 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:44,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:54:44,640 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2025-02-05 14:54:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 14:54:44,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-05 14:54:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:54:44,649 INFO L225 Difference]: With dead ends: 24 [2025-02-05 14:54:44,649 INFO L226 Difference]: Without dead ends: 10 [2025-02-05 14:54:44,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 14:54:44,654 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 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 [2025-02-05 14:54:44,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:54:44,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2025-02-05 14:54:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2025-02-05 14:54:44,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:44,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2025-02-05 14:54:44,684 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2025-02-05 14:54:44,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:54:44,684 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2025-02-05 14:54:44,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:44,686 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2025-02-05 14:54:44,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-05 14:54:44,687 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:54:44,687 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:54:44,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 14:54:44,687 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:54:44,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:54:44,688 INFO L85 PathProgramCache]: Analyzing trace with hash 93296440, now seen corresponding path program 1 times [2025-02-05 14:54:44,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:54:44,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429600475] [2025-02-05 14:54:44,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:54:44,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:54:44,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-05 14:54:44,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-05 14:54:44,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:54:44,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 14:54:44,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:54:44,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429600475] [2025-02-05 14:54:44,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429600475] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 14:54:44,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 14:54:44,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 14:54:44,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745986492] [2025-02-05 14:54:44,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 14:54:44,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 14:54:44,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:54:44,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 14:54:44,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 14:54:44,810 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:44,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:54:44,826 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2025-02-05 14:54:44,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 14:54:44,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-05 14:54:44,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:54:44,828 INFO L225 Difference]: With dead ends: 14 [2025-02-05 14:54:44,828 INFO L226 Difference]: Without dead ends: 11 [2025-02-05 14:54:44,828 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 [2025-02-05 14:54:44,830 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:54:44,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:54:44,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2025-02-05 14:54:44,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2025-02-05 14:54:44,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:44,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2025-02-05 14:54:44,838 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2025-02-05 14:54:44,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:54:44,838 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2025-02-05 14:54:44,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:44,839 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2025-02-05 14:54:44,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-05 14:54:44,839 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:54:44,839 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:54:44,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 14:54:44,840 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:54:44,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:54:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1402745908, now seen corresponding path program 1 times [2025-02-05 14:54:44,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:54:44,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161617153] [2025-02-05 14:54:44,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:54:44,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:54:44,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 14:54:44,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 14:54:44,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:54:44,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 14:54:44,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:54:44,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161617153] [2025-02-05 14:54:44,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161617153] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:54:44,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497689630] [2025-02-05 14:54:44,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:54:44,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:54:44,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:54:44,929 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) [2025-02-05 14:54:44,930 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 [2025-02-05 14:54:44,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 14:54:44,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 14:54:44,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:54:44,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:44,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 14:54:44,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:54:45,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 14:54:45,038 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:54:45,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 14:54:45,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497689630] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:54:45,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:54:45,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 14:54:45,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307891576] [2025-02-05 14:54:45,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:54:45,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 14:54:45,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:54:45,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 14:54:45,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 14:54:45,079 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:45,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:54:45,119 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2025-02-05 14:54:45,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 14:54:45,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-05 14:54:45,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:54:45,121 INFO L225 Difference]: With dead ends: 22 [2025-02-05 14:54:45,121 INFO L226 Difference]: Without dead ends: 15 [2025-02-05 14:54:45,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 14:54:45,122 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:54:45,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:54:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-02-05 14:54:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2025-02-05 14:54:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-02-05 14:54:45,129 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2025-02-05 14:54:45,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:54:45,129 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-02-05 14:54:45,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:45,130 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-02-05 14:54:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-05 14:54:45,130 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:54:45,130 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:54:45,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 14:54:45,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:54:45,335 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:54:45,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:54:45,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1426889297, now seen corresponding path program 1 times [2025-02-05 14:54:45,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:54:45,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043711202] [2025-02-05 14:54:45,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:54:45,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:54:45,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-05 14:54:45,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-05 14:54:45,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:54:45,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:45,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 14:54:45,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:54:45,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043711202] [2025-02-05 14:54:45,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043711202] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:54:45,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644045773] [2025-02-05 14:54:45,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 14:54:45,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:54:45,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:54:45,406 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) [2025-02-05 14:54:45,411 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 [2025-02-05 14:54:45,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-05 14:54:45,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-05 14:54:45,455 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:54:45,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:45,457 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 14:54:45,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:54:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 14:54:45,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:54:45,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 14:54:45,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644045773] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:54:45,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:54:45,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-05 14:54:45,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749810634] [2025-02-05 14:54:45,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:54:45,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 14:54:45,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:54:45,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 14:54:45,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-05 14:54:45,545 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:45,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:54:45,581 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2025-02-05 14:54:45,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 14:54:45,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-05 14:54:45,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:54:45,582 INFO L225 Difference]: With dead ends: 30 [2025-02-05 14:54:45,582 INFO L226 Difference]: Without dead ends: 22 [2025-02-05 14:54:45,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-05 14:54:45,583 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:54:45,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:54:45,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-05 14:54:45,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-02-05 14:54:45,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:45,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2025-02-05 14:54:45,591 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2025-02-05 14:54:45,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:54:45,591 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2025-02-05 14:54:45,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:45,591 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2025-02-05 14:54:45,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-05 14:54:45,592 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:54:45,592 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:54:45,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 14:54:45,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:54:45,793 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:54:45,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:54:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash -889511369, now seen corresponding path program 2 times [2025-02-05 14:54:45,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:54:45,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7596094] [2025-02-05 14:54:45,794 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:54:45,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:54:45,803 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-05 14:54:45,819 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-05 14:54:45,819 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:54:45,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:45,919 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-05 14:54:45,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:54:45,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7596094] [2025-02-05 14:54:45,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7596094] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:54:45,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844779211] [2025-02-05 14:54:45,920 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:54:45,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:54:45,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:54:45,922 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) [2025-02-05 14:54:45,925 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 [2025-02-05 14:54:45,954 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-05 14:54:45,970 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-05 14:54:45,971 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:54:45,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:45,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-05 14:54:45,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:54:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 14:54:46,076 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:54:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 14:54:46,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844779211] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:54:46,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:54:46,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2025-02-05 14:54:46,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975363320] [2025-02-05 14:54:46,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:54:46,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-05 14:54:46,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:54:46,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-05 14:54:46,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=213, Unknown=0, NotChecked=0, Total=342 [2025-02-05 14:54:46,224 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:46,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:54:46,493 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2025-02-05 14:54:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-05 14:54:46,494 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-05 14:54:46,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:54:46,494 INFO L225 Difference]: With dead ends: 50 [2025-02-05 14:54:46,494 INFO L226 Difference]: Without dead ends: 42 [2025-02-05 14:54:46,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=367, Invalid=689, Unknown=0, NotChecked=0, Total=1056 [2025-02-05 14:54:46,496 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:54:46,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:54:46,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-02-05 14:54:46,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2025-02-05 14:54:46,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2025-02-05 14:54:46,503 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 21 [2025-02-05 14:54:46,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:54:46,503 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2025-02-05 14:54:46,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:46,503 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2025-02-05 14:54:46,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-05 14:54:46,504 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:54:46,504 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:54:46,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 14:54:46,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:54:46,708 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:54:46,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:54:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash 929779207, now seen corresponding path program 3 times [2025-02-05 14:54:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:54:46,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668861062] [2025-02-05 14:54:46,709 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:54:46,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:54:46,719 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 16 equivalence classes. [2025-02-05 14:54:46,733 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 13 of 39 statements. [2025-02-05 14:54:46,733 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 14:54:46,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-05 14:54:46,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:54:46,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668861062] [2025-02-05 14:54:46,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668861062] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:54:46,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782771803] [2025-02-05 14:54:46,842 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:54:46,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:54:46,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:54:46,844 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) [2025-02-05 14:54:46,847 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 [2025-02-05 14:54:46,882 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 39 statements into 16 equivalence classes. [2025-02-05 14:54:46,894 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 13 of 39 statements. [2025-02-05 14:54:46,894 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 14:54:46,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:46,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 14:54:46,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:54:47,096 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-05 14:54:47,096 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:54:47,212 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-05 14:54:47,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782771803] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:54:47,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:54:47,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-02-05 14:54:47,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390499330] [2025-02-05 14:54:47,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:54:47,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 14:54:47,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:54:47,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 14:54:47,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=97, Unknown=0, NotChecked=0, Total=182 [2025-02-05 14:54:47,215 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:47,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:54:47,243 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2025-02-05 14:54:47,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 14:54:47,246 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-02-05 14:54:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:54:47,246 INFO L225 Difference]: With dead ends: 50 [2025-02-05 14:54:47,246 INFO L226 Difference]: Without dead ends: 47 [2025-02-05 14:54:47,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=97, Unknown=0, NotChecked=0, Total=182 [2025-02-05 14:54:47,247 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 2 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:54:47,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 31 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:54:47,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-02-05 14:54:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2025-02-05 14:54:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 44 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:47,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2025-02-05 14:54:47,256 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 39 [2025-02-05 14:54:47,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:54:47,257 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2025-02-05 14:54:47,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2025-02-05 14:54:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-02-05 14:54:47,258 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:54:47,258 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 8, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:54:47,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 14:54:47,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-05 14:54:47,459 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:54:47,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:54:47,459 INFO L85 PathProgramCache]: Analyzing trace with hash -415032995, now seen corresponding path program 4 times [2025-02-05 14:54:47,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:54:47,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397966821] [2025-02-05 14:54:47,459 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:54:47,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:54:47,470 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-02-05 14:54:47,487 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-02-05 14:54:47,487 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:54:47,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 15 proven. 36 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-05 14:54:47,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:54:47,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397966821] [2025-02-05 14:54:47,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397966821] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:54:47,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102515677] [2025-02-05 14:54:47,676 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:54:47,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:54:47,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:54:47,678 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) [2025-02-05 14:54:47,680 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 [2025-02-05 14:54:47,713 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-02-05 14:54:47,735 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-02-05 14:54:47,735 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:54:47,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:47,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-05 14:54:47,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:54:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 14:54:48,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:54:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 15 proven. 210 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 14:54:48,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102515677] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:54:48,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:54:48,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 17] total 41 [2025-02-05 14:54:48,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309909154] [2025-02-05 14:54:48,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:54:48,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-05 14:54:48,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:54:48,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-05 14:54:48,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=1090, Unknown=0, NotChecked=0, Total=1640 [2025-02-05 14:54:48,469 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 41 states, 41 states have (on average 2.0) internal successors, (82), 41 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:54:49,190 INFO L93 Difference]: Finished difference Result 95 states and 117 transitions. [2025-02-05 14:54:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-02-05 14:54:49,190 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.0) internal successors, (82), 41 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2025-02-05 14:54:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:54:49,191 INFO L225 Difference]: With dead ends: 95 [2025-02-05 14:54:49,191 INFO L226 Difference]: Without dead ends: 80 [2025-02-05 14:54:49,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1720, Invalid=3250, Unknown=0, NotChecked=0, Total=4970 [2025-02-05 14:54:49,196 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 14:54:49,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 32 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 14:54:49,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-05 14:54:49,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2025-02-05 14:54:49,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0389610389610389) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2025-02-05 14:54:49,211 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 44 [2025-02-05 14:54:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:54:49,211 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2025-02-05 14:54:49,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.0) internal successors, (82), 41 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:49,212 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2025-02-05 14:54:49,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-02-05 14:54:49,214 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:54:49,214 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 9, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 14:54:49,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 14:54:49,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:54:49,416 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:54:49,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:54:49,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1611190375, now seen corresponding path program 5 times [2025-02-05 14:54:49,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:54:49,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3483103] [2025-02-05 14:54:49,417 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:54:49,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:54:49,431 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 77 statements into 32 equivalence classes. [2025-02-05 14:54:49,476 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) and asserted 77 of 77 statements. [2025-02-05 14:54:49,477 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2025-02-05 14:54:49,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2025-02-05 14:54:49,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:54:49,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3483103] [2025-02-05 14:54:49,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3483103] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:54:49,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948600176] [2025-02-05 14:54:49,592 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 14:54:49,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:54:49,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:54:49,595 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) [2025-02-05 14:54:49,599 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 [2025-02-05 14:54:49,639 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 77 statements into 32 equivalence classes. [2025-02-05 14:54:49,681 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) and asserted 77 of 77 statements. [2025-02-05 14:54:49,681 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2025-02-05 14:54:49,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:49,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-02-05 14:54:49,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:54:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 31 proven. 930 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-05 14:54:50,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:54:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 31 proven. 930 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-05 14:54:51,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948600176] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:54:51,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:54:51,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 33, 33] total 66 [2025-02-05 14:54:51,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307718672] [2025-02-05 14:54:51,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:54:51,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2025-02-05 14:54:51,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:54:51,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2025-02-05 14:54:51,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2025-02-05 14:54:51,660 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 66 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:54:51,887 INFO L93 Difference]: Finished difference Result 161 states and 200 transitions. [2025-02-05 14:54:51,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-02-05 14:54:51,887 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 66 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2025-02-05 14:54:51,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:54:51,891 INFO L225 Difference]: With dead ends: 161 [2025-02-05 14:54:51,891 INFO L226 Difference]: Without dead ends: 145 [2025-02-05 14:54:51,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2025-02-05 14:54:51,896 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:54:51,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 31 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:54:51,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-02-05 14:54:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2025-02-05 14:54:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.027972027972028) internal successors, (147), 143 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2025-02-05 14:54:51,930 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 77 [2025-02-05 14:54:51,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:54:51,930 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2025-02-05 14:54:51,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.106060606060606) internal successors, (139), 66 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:51,931 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2025-02-05 14:54:51,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-02-05 14:54:51,932 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:54:51,932 INFO L218 NwaCegarLoop]: trace histogram [64, 62, 9, 2, 1, 1, 1, 1, 1, 1] [2025-02-05 14:54:51,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-05 14:54:52,133 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,SelfDestructingSolverStorable7 [2025-02-05 14:54:52,133 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:54:52,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:54:52,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1702955624, now seen corresponding path program 6 times [2025-02-05 14:54:52,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:54:52,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146917920] [2025-02-05 14:54:52,134 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:54:52,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:54:52,150 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 143 statements into 65 equivalence classes. [2025-02-05 14:54:52,183 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 35 of 143 statements. [2025-02-05 14:54:52,183 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-05 14:54:52,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:52,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 190 proven. 45 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2025-02-05 14:54:52,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:54:52,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146917920] [2025-02-05 14:54:52,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146917920] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:54:52,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226786546] [2025-02-05 14:54:52,378 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 14:54:52,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:54:52,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:54:52,380 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) [2025-02-05 14:54:52,383 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 [2025-02-05 14:54:52,435 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 143 statements into 65 equivalence classes. [2025-02-05 14:54:52,459 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 35 of 143 statements. [2025-02-05 14:54:52,459 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-05 14:54:52,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:52,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-05 14:54:52,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:54:52,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 190 proven. 45 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2025-02-05 14:54:52,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:54:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 190 proven. 45 refuted. 0 times theorem prover too weak. 3906 trivial. 0 not checked. [2025-02-05 14:54:53,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226786546] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:54:53,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:54:53,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2025-02-05 14:54:53,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972843481] [2025-02-05 14:54:53,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:54:53,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-05 14:54:53,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:54:53,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-05 14:54:53,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=541, Unknown=0, NotChecked=0, Total=992 [2025-02-05 14:54:53,293 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand has 32 states, 32 states have (on average 1.6875) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:53,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:54:53,333 INFO L93 Difference]: Finished difference Result 164 states and 180 transitions. [2025-02-05 14:54:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-05 14:54:53,333 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2025-02-05 14:54:53,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:54:53,334 INFO L225 Difference]: With dead ends: 164 [2025-02-05 14:54:53,334 INFO L226 Difference]: Without dead ends: 161 [2025-02-05 14:54:53,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=451, Invalid=541, Unknown=0, NotChecked=0, Total=992 [2025-02-05 14:54:53,335 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:54:53,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 35 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:54:53,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-02-05 14:54:53,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2025-02-05 14:54:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.025974025974026) internal successors, (158), 154 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:53,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 158 transitions. [2025-02-05 14:54:53,351 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 158 transitions. Word has length 143 [2025-02-05 14:54:53,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:54:53,351 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 158 transitions. [2025-02-05 14:54:53,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.6875) internal successors, (54), 32 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:54:53,352 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 158 transitions. [2025-02-05 14:54:53,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-02-05 14:54:53,359 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:54:53,359 INFO L218 NwaCegarLoop]: trace histogram [64, 62, 20, 2, 1, 1, 1, 1, 1, 1] [2025-02-05 14:54:53,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-05 14:54:53,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:54:53,560 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:54:53,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:54:53,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1936167396, now seen corresponding path program 7 times [2025-02-05 14:54:53,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:54:53,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590687969] [2025-02-05 14:54:53,560 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:54:53,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:54:53,577 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-02-05 14:54:53,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-02-05 14:54:53,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:54:53,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4306 backedges. 189 proven. 3906 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2025-02-05 14:54:57,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:54:57,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590687969] [2025-02-05 14:54:57,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590687969] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:54:57,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159136740] [2025-02-05 14:54:57,206 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 14:54:57,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:54:57,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:54:57,208 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) [2025-02-05 14:54:57,208 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 [2025-02-05 14:54:57,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 154 statements into 1 equivalence classes. [2025-02-05 14:54:57,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 154 of 154 statements. [2025-02-05 14:54:57,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 14:54:57,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:54:57,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 126 conjuncts are in the unsatisfiable core [2025-02-05 14:54:57,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:54:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4306 backedges. 189 proven. 3906 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2025-02-05 14:54:57,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:55:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4306 backedges. 189 proven. 3906 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2025-02-05 14:55:01,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159136740] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:55:01,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:55:01,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 129 [2025-02-05 14:55:01,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886177048] [2025-02-05 14:55:01,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:55:01,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2025-02-05 14:55:01,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:55:01,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2025-02-05 14:55:01,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2025-02-05 14:55:01,487 INFO L87 Difference]: Start difference. First operand 155 states and 158 transitions. Second operand has 129 states, 129 states have (on average 2.054263565891473) internal successors, (265), 129 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:55:01,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:55:01,837 INFO L93 Difference]: Finished difference Result 312 states and 382 transitions. [2025-02-05 14:55:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2025-02-05 14:55:01,838 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.054263565891473) internal successors, (265), 129 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2025-02-05 14:55:01,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:55:01,840 INFO L225 Difference]: With dead ends: 312 [2025-02-05 14:55:01,840 INFO L226 Difference]: Without dead ends: 283 [2025-02-05 14:55:01,842 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2025-02-05 14:55:01,843 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 14:55:01,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 14:55:01,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2025-02-05 14:55:01,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2025-02-05 14:55:01,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.0141843971631206) internal successors, (286), 282 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:55:01,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 286 transitions. [2025-02-05 14:55:01,873 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 286 transitions. Word has length 154 [2025-02-05 14:55:01,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:55:01,874 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 286 transitions. [2025-02-05 14:55:01,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.054263565891473) internal successors, (265), 129 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:55:01,874 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 286 transitions. [2025-02-05 14:55:01,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2025-02-05 14:55:01,877 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:55:01,877 INFO L218 NwaCegarLoop]: trace histogram [128, 126, 20, 2, 1, 1, 1, 1, 1, 1] [2025-02-05 14:55:01,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 14:55:02,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:55:02,078 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:55:02,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:55:02,079 INFO L85 PathProgramCache]: Analyzing trace with hash 55719324, now seen corresponding path program 8 times [2025-02-05 14:55:02,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:55:02,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387547108] [2025-02-05 14:55:02,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:55:02,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:55:02,102 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 282 statements into 2 equivalence classes. [2025-02-05 14:55:02,145 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 282 of 282 statements. [2025-02-05 14:55:02,145 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:55:02,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:55:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16594 backedges. 382 proven. 210 refuted. 0 times theorem prover too weak. 16002 trivial. 0 not checked. [2025-02-05 14:55:02,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:55:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387547108] [2025-02-05 14:55:02,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387547108] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:55:02,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385838985] [2025-02-05 14:55:02,882 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 14:55:02,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:55:02,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:55:02,884 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) [2025-02-05 14:55:02,886 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 [2025-02-05 14:55:02,974 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 282 statements into 2 equivalence classes. [2025-02-05 14:55:03,068 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 282 of 282 statements. [2025-02-05 14:55:03,068 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 14:55:03,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:55:03,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 254 conjuncts are in the unsatisfiable core [2025-02-05 14:55:03,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:55:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 16594 backedges. 381 proven. 16002 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2025-02-05 14:55:09,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:55:25,307 INFO L134 CoverageAnalysis]: Checked inductivity of 16594 backedges. 381 proven. 16002 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2025-02-05 14:55:25,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385838985] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:55:25,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:55:25,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 129, 129] total 277 [2025-02-05 14:55:25,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900840122] [2025-02-05 14:55:25,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:55:25,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 277 states [2025-02-05 14:55:25,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:55:25,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 277 interpolants. [2025-02-05 14:55:25,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32892, Invalid=43560, Unknown=0, NotChecked=0, Total=76452 [2025-02-05 14:55:25,320 INFO L87 Difference]: Start difference. First operand 283 states and 286 transitions. Second operand has 277 states, 277 states have (on average 1.9711191335740073) internal successors, (546), 277 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:55:48,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:55:48,490 INFO L93 Difference]: Finished difference Result 575 states and 713 transitions. [2025-02-05 14:55:48,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states. [2025-02-05 14:55:48,490 INFO L78 Accepts]: Start accepts. Automaton has has 277 states, 277 states have (on average 1.9711191335740073) internal successors, (546), 277 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2025-02-05 14:55:48,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:55:48,493 INFO L225 Difference]: With dead ends: 575 [2025-02-05 14:55:48,493 INFO L226 Difference]: Without dead ends: 546 [2025-02-05 14:55:48,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 529 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46234 ImplicationChecksByTransitivity, 43.0s TimeCoverageRelationStatistics Valid=102234, Invalid=179196, Unknown=0, NotChecked=0, Total=281430 [2025-02-05 14:55:48,504 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 14:55:48,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 14:55:48,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2025-02-05 14:55:48,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 540. [2025-02-05 14:55:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 1.007421150278293) internal successors, (543), 539 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:55:48,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 543 transitions. [2025-02-05 14:55:48,546 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 543 transitions. Word has length 282 [2025-02-05 14:55:48,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:55:48,546 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 543 transitions. [2025-02-05 14:55:48,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 277 states, 277 states have (on average 1.9711191335740073) internal successors, (546), 277 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:55:48,547 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 543 transitions. [2025-02-05 14:55:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2025-02-05 14:55:48,554 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:55:48,554 INFO L218 NwaCegarLoop]: trace histogram [256, 254, 21, 2, 1, 1, 1, 1, 1, 1] [2025-02-05 14:55:48,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-05 14:55:48,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:55:48,759 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:55:48,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:55:48,760 INFO L85 PathProgramCache]: Analyzing trace with hash -153400600, now seen corresponding path program 9 times [2025-02-05 14:55:48,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:55:48,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295673577] [2025-02-05 14:55:48,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:55:48,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:55:48,804 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 539 statements into 257 equivalence classes. [2025-02-05 14:55:48,818 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 26 of 539 statements. [2025-02-05 14:55:48,818 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 14:55:48,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:55:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 65767 backedges. 1270 proven. 4 refuted. 0 times theorem prover too weak. 64493 trivial. 0 not checked. [2025-02-05 14:55:48,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:55:48,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295673577] [2025-02-05 14:55:48,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295673577] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:55:48,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858986454] [2025-02-05 14:55:48,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 14:55:48,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:55:48,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:55:48,852 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) [2025-02-05 14:55:48,854 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 [2025-02-05 14:55:48,999 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 539 statements into 257 equivalence classes. [2025-02-05 14:55:49,014 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 26 of 539 statements. [2025-02-05 14:55:49,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 14:55:49,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:55:49,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 14:55:49,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 14:55:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 65767 backedges. 1270 proven. 4 refuted. 0 times theorem prover too weak. 64493 trivial. 0 not checked. [2025-02-05 14:55:49,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 14:55:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 65767 backedges. 1270 proven. 4 refuted. 0 times theorem prover too weak. 64493 trivial. 0 not checked. [2025-02-05 14:55:49,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858986454] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 14:55:49,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 14:55:49,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-05 14:55:49,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545150439] [2025-02-05 14:55:49,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 14:55:49,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 14:55:49,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 14:55:49,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 14:55:49,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-05 14:55:49,079 INFO L87 Difference]: Start difference. First operand 540 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:55:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 14:55:49,170 INFO L93 Difference]: Finished difference Result 573 states and 584 transitions. [2025-02-05 14:55:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 14:55:49,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 539 [2025-02-05 14:55:49,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 14:55:49,173 INFO L225 Difference]: With dead ends: 573 [2025-02-05 14:55:49,174 INFO L226 Difference]: Without dead ends: 548 [2025-02-05 14:55:49,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1075 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-05 14:55:49,175 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 14:55:49,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 14:55:49,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2025-02-05 14:55:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2025-02-05 14:55:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 1.0146252285191957) internal successors, (555), 547 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:55:49,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 555 transitions. [2025-02-05 14:55:49,219 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 555 transitions. Word has length 539 [2025-02-05 14:55:49,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 14:55:49,219 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 555 transitions. [2025-02-05 14:55:49,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 14:55:49,220 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 555 transitions. [2025-02-05 14:55:49,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 548 [2025-02-05 14:55:49,228 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 14:55:49,228 INFO L218 NwaCegarLoop]: trace histogram [260, 254, 21, 6, 1, 1, 1, 1, 1, 1] [2025-02-05 14:55:49,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 14:55:49,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-05 14:55:49,429 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 14:55:49,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 14:55:49,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1179360916, now seen corresponding path program 10 times [2025-02-05 14:55:49,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 14:55:49,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938617000] [2025-02-05 14:55:49,429 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:55:49,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 14:55:49,467 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 547 statements into 2 equivalence classes. [2025-02-05 14:55:49,510 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 547 of 547 statements. [2025-02-05 14:55:49,511 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:55:49,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:55:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 67831 backedges. 2830 proven. 231 refuted. 0 times theorem prover too weak. 64770 trivial. 0 not checked. [2025-02-05 14:55:50,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 14:55:50,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938617000] [2025-02-05 14:55:50,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938617000] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 14:55:50,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236121466] [2025-02-05 14:55:50,703 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 14:55:50,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 14:55:50,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 14:55:50,705 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) [2025-02-05 14:55:50,707 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 [2025-02-05 14:55:50,870 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 547 statements into 2 equivalence classes. [2025-02-05 14:55:51,066 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 547 of 547 statements. [2025-02-05 14:55:51,067 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 14:55:51,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 14:55:51,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 510 conjuncts are in the unsatisfiable core [2025-02-05 14:55:51,118 INFO L279 TraceCheckSpWp]: Computing forward predicates...