./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s22if.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/array-fpi/s22if.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 0a4adccbfdb287a751e5c33c3e59569f71741de562bf1a42797adb485c4a44d2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 10:33:13,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 10:33:13,075 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 10:33:13,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 10:33:13,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 10:33:13,100 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 10:33:13,101 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 10:33:13,101 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 10:33:13,101 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 10:33:13,101 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 10:33:13,101 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 10:33:13,101 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 10:33:13,102 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 10:33:13,102 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 10:33:13,102 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 10:33:13,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 10:33:13,102 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 10:33:13,102 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 10:33:13,102 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 10:33:13,102 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 10:33:13,102 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 10:33:13,102 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 10:33:13,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 10:33:13,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 10:33:13,102 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 10:33:13,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 10:33:13,102 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 10:33:13,102 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 10:33:13,102 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 10:33:13,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 10:33:13,103 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 10:33:13,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 10:33:13,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:33:13,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 10:33:13,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 10:33:13,103 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 10:33:13,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 10:33:13,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 10:33:13,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 10:33:13,103 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 10:33:13,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 10:33:13,103 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 10:33:13,103 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 10:33:13,103 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 -> 0a4adccbfdb287a751e5c33c3e59569f71741de562bf1a42797adb485c4a44d2 [2025-02-05 10:33:13,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 10:33:13,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 10:33:13,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 10:33:13,361 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 10:33:13,361 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 10:33:13,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s22if.c [2025-02-05 10:33:14,511 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6de8baead/870eb5703dd54c10905bd12eb957b796/FLAGa1b946f7a [2025-02-05 10:33:14,753 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 10:33:14,757 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-fpi/s22if.c [2025-02-05 10:33:14,785 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6de8baead/870eb5703dd54c10905bd12eb957b796/FLAGa1b946f7a [2025-02-05 10:33:15,080 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6de8baead/870eb5703dd54c10905bd12eb957b796 [2025-02-05 10:33:15,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 10:33:15,083 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 10:33:15,084 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 10:33:15,084 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 10:33:15,087 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 10:33:15,087 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:33:15" (1/1) ... [2025-02-05 10:33:15,088 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aad8e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15, skipping insertion in model container [2025-02-05 10:33:15,088 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:33:15" (1/1) ... [2025-02-05 10:33:15,099 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 10:33:15,204 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/array-fpi/s22if.c[588,601] [2025-02-05 10:33:15,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:33:15,230 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 10:33:15,238 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/array-fpi/s22if.c[588,601] [2025-02-05 10:33:15,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:33:15,258 INFO L204 MainTranslator]: Completed translation [2025-02-05 10:33:15,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15 WrapperNode [2025-02-05 10:33:15,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 10:33:15,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 10:33:15,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 10:33:15,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 10:33:15,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15" (1/1) ... [2025-02-05 10:33:15,270 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15" (1/1) ... [2025-02-05 10:33:15,284 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2025-02-05 10:33:15,285 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 10:33:15,286 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 10:33:15,286 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 10:33:15,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 10:33:15,291 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15" (1/1) ... [2025-02-05 10:33:15,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15" (1/1) ... [2025-02-05 10:33:15,293 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15" (1/1) ... [2025-02-05 10:33:15,306 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 8, 9, 6]. 36 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 6 writes are split as follows [0, 0, 3, 3]. [2025-02-05 10:33:15,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15" (1/1) ... [2025-02-05 10:33:15,307 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15" (1/1) ... [2025-02-05 10:33:15,313 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15" (1/1) ... [2025-02-05 10:33:15,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15" (1/1) ... [2025-02-05 10:33:15,314 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15" (1/1) ... [2025-02-05 10:33:15,317 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15" (1/1) ... [2025-02-05 10:33:15,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 10:33:15,318 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 10:33:15,318 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 10:33:15,318 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 10:33:15,319 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15" (1/1) ... [2025-02-05 10:33:15,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:33:15,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:15,350 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 10:33:15,353 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 10:33:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 10:33:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 10:33:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 10:33:15,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 10:33:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 10:33:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 10:33:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 10:33:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 10:33:15,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-05 10:33:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-05 10:33:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-05 10:33:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 10:33:15,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 10:33:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 10:33:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 10:33:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-05 10:33:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-05 10:33:15,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 10:33:15,431 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 10:33:15,433 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 10:33:15,538 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(main_~#sum~0#1.base, main_~#sum~0#1.offset);havoc main_~#sum~0#1.base, main_~#sum~0#1.offset; [2025-02-05 10:33:15,542 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-02-05 10:33:15,542 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 10:33:15,548 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 10:33:15,548 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 10:33:15,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:33:15 BoogieIcfgContainer [2025-02-05 10:33:15,548 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 10:33:15,549 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 10:33:15,550 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 10:33:15,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 10:33:15,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:33:15" (1/3) ... [2025-02-05 10:33:15,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad0989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:33:15, skipping insertion in model container [2025-02-05 10:33:15,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:33:15" (2/3) ... [2025-02-05 10:33:15,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad0989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:33:15, skipping insertion in model container [2025-02-05 10:33:15,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:33:15" (3/3) ... [2025-02-05 10:33:15,554 INFO L128 eAbstractionObserver]: Analyzing ICFG s22if.c [2025-02-05 10:33:15,562 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 10:33:15,563 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG s22if.c that has 1 procedures, 19 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-05 10:33:15,593 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 10:33:15,600 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;@23fae442, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 10:33:15,600 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 10:33:15,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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 10:33:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-05 10:33:15,605 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:15,606 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:15,606 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:15,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash -411444654, now seen corresponding path program 1 times [2025-02-05 10:33:15,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:15,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87767374] [2025-02-05 10:33:15,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:15,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:15,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-05 10:33:15,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-05 10:33:15,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:15,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:15,708 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 10:33:15,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:15,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87767374] [2025-02-05 10:33:15,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87767374] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:33:15,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:33:15,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 10:33:15,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783527151] [2025-02-05 10:33:15,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:33:15,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 10:33:15,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:15,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 10:33:15,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 10:33:15,729 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10:33:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:15,736 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2025-02-05 10:33:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 10:33:15,737 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2025-02-05 10:33:15,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:15,740 INFO L225 Difference]: With dead ends: 34 [2025-02-05 10:33:15,740 INFO L226 Difference]: Without dead ends: 15 [2025-02-05 10:33:15,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 10:33:15,744 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:15,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:33:15,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-02-05 10:33:15,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-02-05 10:33:15,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 10:33:15,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2025-02-05 10:33:15,761 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2025-02-05 10:33:15,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:15,761 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2025-02-05 10:33:15,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10:33:15,762 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2025-02-05 10:33:15,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-05 10:33:15,763 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:15,763 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:15,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 10:33:15,764 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:15,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash 476059027, now seen corresponding path program 1 times [2025-02-05 10:33:15,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:15,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413289428] [2025-02-05 10:33:15,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:15,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-05 10:33:15,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-05 10:33:15,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:15,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:15,884 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 10:33:15,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:15,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413289428] [2025-02-05 10:33:15,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413289428] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:33:15,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:33:15,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 10:33:15,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961177849] [2025-02-05 10:33:15,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:33:15,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 10:33:15,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:15,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 10:33:15,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:33:15,885 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10:33:15,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:15,958 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2025-02-05 10:33:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 10:33:15,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2025-02-05 10:33:15,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:15,960 INFO L225 Difference]: With dead ends: 31 [2025-02-05 10:33:15,961 INFO L226 Difference]: Without dead ends: 22 [2025-02-05 10:33:15,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:33:15,962 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 29 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:15,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 9 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:33:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-05 10:33:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2025-02-05 10:33:15,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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 10:33:15,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-02-05 10:33:15,969 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2025-02-05 10:33:15,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:15,969 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-02-05 10:33:15,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10:33:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-02-05 10:33:15,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-05 10:33:15,970 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:15,970 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:15,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 10:33:15,970 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:15,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:15,970 INFO L85 PathProgramCache]: Analyzing trace with hash 330064146, now seen corresponding path program 1 times [2025-02-05 10:33:15,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:15,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065114561] [2025-02-05 10:33:15,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:15,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:15,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-05 10:33:16,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-05 10:33:16,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:16,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:16,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:33:16,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:16,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065114561] [2025-02-05 10:33:16,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065114561] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:16,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457013224] [2025-02-05 10:33:16,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:16,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:16,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:16,471 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 10:33:16,474 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 10:33:16,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-05 10:33:16,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-05 10:33:16,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:16,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:16,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 10:33:16,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:16,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 10:33:16,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-02-05 10:33:16,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-05 10:33:16,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:33:16,712 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:16,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-02-05 10:33:16,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-05 10:33:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:33:16,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457013224] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:16,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:16,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2025-02-05 10:33:16,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822589469] [2025-02-05 10:33:16,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:16,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-05 10:33:16,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:16,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-05 10:33:16,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2025-02-05 10:33:16,852 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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 10:33:17,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:17,855 INFO L93 Difference]: Finished difference Result 129 states and 184 transitions. [2025-02-05 10:33:17,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-05 10:33:17,856 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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 17 [2025-02-05 10:33:17,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:17,857 INFO L225 Difference]: With dead ends: 129 [2025-02-05 10:33:17,857 INFO L226 Difference]: Without dead ends: 119 [2025-02-05 10:33:17,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=762, Invalid=3528, Unknown=0, NotChecked=0, Total=4290 [2025-02-05 10:33:17,860 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 244 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:17,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 62 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:33:17,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-02-05 10:33:17,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 46. [2025-02-05 10:33:17,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4444444444444444) internal successors, (65), 45 states have internal predecessors, (65), 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 10:33:17,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 65 transitions. [2025-02-05 10:33:17,866 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 65 transitions. Word has length 17 [2025-02-05 10:33:17,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:17,866 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 65 transitions. [2025-02-05 10:33:17,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 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 10:33:17,867 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 65 transitions. [2025-02-05 10:33:17,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-05 10:33:17,867 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:17,867 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:17,875 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 10:33:18,071 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 10:33:18,071 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:18,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:18,072 INFO L85 PathProgramCache]: Analyzing trace with hash 330987667, now seen corresponding path program 1 times [2025-02-05 10:33:18,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:18,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282392537] [2025-02-05 10:33:18,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:18,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:18,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-05 10:33:18,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-05 10:33:18,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:18,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:33:18,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:18,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282392537] [2025-02-05 10:33:18,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282392537] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:18,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873958194] [2025-02-05 10:33:18,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:18,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:18,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:18,218 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 10:33:18,223 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 10:33:18,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-05 10:33:18,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-05 10:33:18,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:18,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:18,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-05 10:33:18,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:18,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-05 10:33:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:33:18,289 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:18,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-02-05 10:33:18,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-02-05 10:33:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:33:18,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873958194] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:18,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:18,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-02-05 10:33:18,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501765621] [2025-02-05 10:33:18,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:18,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 10:33:18,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:18,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 10:33:18,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-05 10:33:18,317 INFO L87 Difference]: Start difference. First operand 46 states and 65 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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 10:33:18,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:18,376 INFO L93 Difference]: Finished difference Result 72 states and 100 transitions. [2025-02-05 10:33:18,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 10:33:18,377 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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 17 [2025-02-05 10:33:18,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:18,377 INFO L225 Difference]: With dead ends: 72 [2025-02-05 10:33:18,377 INFO L226 Difference]: Without dead ends: 38 [2025-02-05 10:33:18,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-02-05 10:33:18,378 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:18,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 37 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:33:18,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-02-05 10:33:18,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2025-02-05 10:33:18,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 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 10:33:18,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2025-02-05 10:33:18,385 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 17 [2025-02-05 10:33:18,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:18,385 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2025-02-05 10:33:18,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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 10:33:18,385 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2025-02-05 10:33:18,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-05 10:33:18,385 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:18,385 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:18,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-05 10:33:18,593 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 10:33:18,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:18,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:18,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2138442130, now seen corresponding path program 1 times [2025-02-05 10:33:18,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:18,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380289715] [2025-02-05 10:33:18,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:18,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:18,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-05 10:33:18,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-05 10:33:18,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:18,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:33:18,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:18,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380289715] [2025-02-05 10:33:18,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380289715] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:18,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629076132] [2025-02-05 10:33:18,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:18,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:18,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:18,760 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 10:33:18,764 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 10:33:18,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-05 10:33:18,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-05 10:33:18,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:18,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:18,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 10:33:18,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:18,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-05 10:33:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:33:18,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:18,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2025-02-05 10:33:18,914 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-02-05 10:33:18,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2025-02-05 10:33:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:33:18,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629076132] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:18,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:18,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2025-02-05 10:33:18,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207482116] [2025-02-05 10:33:18,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:18,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 10:33:18,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:18,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 10:33:18,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:33:18,923 INFO L87 Difference]: Start difference. First operand 30 states and 39 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 10:33:19,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:19,024 INFO L93 Difference]: Finished difference Result 73 states and 98 transitions. [2025-02-05 10:33:19,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 10:33:19,024 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 17 [2025-02-05 10:33:19,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:19,025 INFO L225 Difference]: With dead ends: 73 [2025-02-05 10:33:19,025 INFO L226 Difference]: Without dead ends: 62 [2025-02-05 10:33:19,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-02-05 10:33:19,026 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 41 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:19,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 56 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:33:19,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-05 10:33:19,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 40. [2025-02-05 10:33:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 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 10:33:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2025-02-05 10:33:19,031 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 17 [2025-02-05 10:33:19,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:19,031 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2025-02-05 10:33:19,031 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 10:33:19,031 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2025-02-05 10:33:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-05 10:33:19,032 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:19,032 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:19,037 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 10:33:19,232 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 10:33:19,232 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:19,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:19,232 INFO L85 PathProgramCache]: Analyzing trace with hash 658744914, now seen corresponding path program 1 times [2025-02-05 10:33:19,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:19,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66678601] [2025-02-05 10:33:19,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:19,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:19,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-05 10:33:19,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-05 10:33:19,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:19,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:33:19,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:19,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66678601] [2025-02-05 10:33:19,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66678601] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:19,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653660301] [2025-02-05 10:33:19,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:19,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:19,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:19,303 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 10:33:19,305 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 10:33:19,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-05 10:33:19,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-05 10:33:19,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:19,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:19,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 10:33:19,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:19,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:33:19,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:19,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:33:19,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653660301] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:19,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:19,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-02-05 10:33:19,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884685969] [2025-02-05 10:33:19,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:19,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 10:33:19,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:19,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 10:33:19,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-02-05 10:33:19,423 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 10:33:19,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:19,546 INFO L93 Difference]: Finished difference Result 73 states and 96 transitions. [2025-02-05 10:33:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 10:33:19,547 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 18 [2025-02-05 10:33:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:19,547 INFO L225 Difference]: With dead ends: 73 [2025-02-05 10:33:19,547 INFO L226 Difference]: Without dead ends: 65 [2025-02-05 10:33:19,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2025-02-05 10:33:19,548 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 48 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:19,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 19 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:33:19,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-02-05 10:33:19,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 45. [2025-02-05 10:33:19,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 44 states have internal predecessors, (60), 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 10:33:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2025-02-05 10:33:19,558 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 18 [2025-02-05 10:33:19,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:19,559 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2025-02-05 10:33:19,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 10:33:19,559 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2025-02-05 10:33:19,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-05 10:33:19,560 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:19,560 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:19,567 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 10:33:19,761 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 10:33:19,761 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:19,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:19,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1750087954, now seen corresponding path program 2 times [2025-02-05 10:33:19,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:19,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652160006] [2025-02-05 10:33:19,762 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:33:19,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:19,771 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-05 10:33:19,779 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-05 10:33:19,779 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:33:19,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:33:19,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:19,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652160006] [2025-02-05 10:33:19,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652160006] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:19,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230175794] [2025-02-05 10:33:19,842 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:33:19,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:19,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:19,844 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 10:33:19,847 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 10:33:19,880 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-05 10:33:19,893 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-05 10:33:19,893 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:33:19,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:19,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 10:33:19,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:33:19,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:33:19,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230175794] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:19,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:19,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-02-05 10:33:19,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154135337] [2025-02-05 10:33:19,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:19,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 10:33:19,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:19,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 10:33:19,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-02-05 10:33:19,966 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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 10:33:20,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:20,050 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2025-02-05 10:33:20,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 10:33:20,051 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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 20 [2025-02-05 10:33:20,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:20,051 INFO L225 Difference]: With dead ends: 66 [2025-02-05 10:33:20,051 INFO L226 Difference]: Without dead ends: 35 [2025-02-05 10:33:20,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-02-05 10:33:20,052 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:20,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 33 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:33:20,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-02-05 10:33:20,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2025-02-05 10:33:20,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 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 10:33:20,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2025-02-05 10:33:20,056 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 20 [2025-02-05 10:33:20,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:20,056 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2025-02-05 10:33:20,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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 10:33:20,057 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2025-02-05 10:33:20,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 10:33:20,057 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:20,057 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:20,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 10:33:20,257 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 10:33:20,257 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:20,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:20,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2079589618, now seen corresponding path program 1 times [2025-02-05 10:33:20,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:20,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474645234] [2025-02-05 10:33:20,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:20,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:20,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 10:33:20,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:33:20,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:20,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:33:20,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:20,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474645234] [2025-02-05 10:33:20,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474645234] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:20,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858585996] [2025-02-05 10:33:20,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:20,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:20,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:20,620 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 10:33:20,623 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 10:33:20,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 10:33:20,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:33:20,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:20,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:20,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-05 10:33:20,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:20,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-05 10:33:20,768 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:33:20,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2025-02-05 10:33:20,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-05 10:33:20,896 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:33:20,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:21,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2025-02-05 10:33:21,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2025-02-05 10:33:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:33:21,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858585996] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:21,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:21,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 12] total 32 [2025-02-05 10:33:21,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483780493] [2025-02-05 10:33:21,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:21,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-05 10:33:21,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:21,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-05 10:33:21,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=870, Unknown=0, NotChecked=0, Total=992 [2025-02-05 10:33:21,120 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 32 states, 32 states have (on average 1.78125) internal successors, (57), 32 states have internal predecessors, (57), 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 10:33:23,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:23,936 INFO L93 Difference]: Finished difference Result 230 states and 326 transitions. [2025-02-05 10:33:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2025-02-05 10:33:23,936 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.78125) internal successors, (57), 32 states have internal predecessors, (57), 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 24 [2025-02-05 10:33:23,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:23,937 INFO L225 Difference]: With dead ends: 230 [2025-02-05 10:33:23,937 INFO L226 Difference]: Without dead ends: 219 [2025-02-05 10:33:23,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2172, Invalid=16188, Unknown=0, NotChecked=0, Total=18360 [2025-02-05 10:33:23,946 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 375 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:23,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 111 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 10:33:23,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2025-02-05 10:33:23,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 89. [2025-02-05 10:33:23,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.4090909090909092) internal successors, (124), 88 states have internal predecessors, (124), 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 10:33:23,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 124 transitions. [2025-02-05 10:33:23,965 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 124 transitions. Word has length 24 [2025-02-05 10:33:23,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:23,965 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 124 transitions. [2025-02-05 10:33:23,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.78125) internal successors, (57), 32 states have internal predecessors, (57), 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 10:33:23,966 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 124 transitions. [2025-02-05 10:33:23,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 10:33:23,967 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:23,967 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:23,974 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 10:33:24,168 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 10:33:24,168 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:24,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:24,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2080513139, now seen corresponding path program 1 times [2025-02-05 10:33:24,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:24,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278197838] [2025-02-05 10:33:24,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:24,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:24,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 10:33:24,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:33:24,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:24,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:33:24,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:24,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278197838] [2025-02-05 10:33:24,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278197838] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:24,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918446660] [2025-02-05 10:33:24,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:24,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:24,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:24,446 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 10:33:24,451 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 10:33:24,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 10:33:24,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:33:24,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:24,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:24,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-05 10:33:24,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:24,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-05 10:33:24,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:33:24,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2025-02-05 10:33:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:33:24,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:24,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-02-05 10:33:24,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2025-02-05 10:33:24,619 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:33:24,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918446660] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:24,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:24,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-05 10:33:24,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947863256] [2025-02-05 10:33:24,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:24,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 10:33:24,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:24,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 10:33:24,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:33:24,623 INFO L87 Difference]: Start difference. First operand 89 states and 124 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 10:33:24,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:24,713 INFO L93 Difference]: Finished difference Result 128 states and 177 transitions. [2025-02-05 10:33:24,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 10:33:24,713 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 24 [2025-02-05 10:33:24,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:24,714 INFO L225 Difference]: With dead ends: 128 [2025-02-05 10:33:24,714 INFO L226 Difference]: Without dead ends: 68 [2025-02-05 10:33:24,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2025-02-05 10:33:24,714 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:24,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 64 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:33:24,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-05 10:33:24,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2025-02-05 10:33:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 56 states have internal predecessors, (74), 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 10:33:24,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 74 transitions. [2025-02-05 10:33:24,725 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 74 transitions. Word has length 24 [2025-02-05 10:33:24,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:24,726 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 74 transitions. [2025-02-05 10:33:24,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 10:33:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 74 transitions. [2025-02-05 10:33:24,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 10:33:24,727 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:24,727 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:24,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 10:33:24,928 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 10:33:24,928 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:24,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:24,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1951430420, now seen corresponding path program 1 times [2025-02-05 10:33:24,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:24,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54817329] [2025-02-05 10:33:24,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:24,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:24,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 10:33:24,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:33:24,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:24,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 10:33:25,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:25,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54817329] [2025-02-05 10:33:25,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54817329] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:25,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629383332] [2025-02-05 10:33:25,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:33:25,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:25,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:25,121 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 10:33:25,122 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 10:33:25,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 10:33:25,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:33:25,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:25,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:25,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-05 10:33:25,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:25,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-05 10:33:25,261 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 10:33:25,261 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:25,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2025-02-05 10:33:25,323 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-02-05 10:33:25,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2025-02-05 10:33:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 10:33:25,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629383332] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:25,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:25,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2025-02-05 10:33:25,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431538355] [2025-02-05 10:33:25,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:25,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-05 10:33:25,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:25,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-05 10:33:25,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-02-05 10:33:25,356 INFO L87 Difference]: Start difference. First operand 57 states and 74 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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 10:33:25,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:25,531 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2025-02-05 10:33:25,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 10:33:25,531 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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) Word has length 24 [2025-02-05 10:33:25,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:25,532 INFO L225 Difference]: With dead ends: 94 [2025-02-05 10:33:25,532 INFO L226 Difference]: Without dead ends: 88 [2025-02-05 10:33:25,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2025-02-05 10:33:25,532 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 51 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:25,533 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 64 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:33:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-02-05 10:33:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 63. [2025-02-05 10:33:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 62 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 10:33:25,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2025-02-05 10:33:25,540 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 24 [2025-02-05 10:33:25,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:25,540 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2025-02-05 10:33:25,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 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 10:33:25,540 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2025-02-05 10:33:25,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-05 10:33:25,540 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:25,540 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:25,556 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 10:33:25,741 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 10:33:25,741 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:25,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:25,741 INFO L85 PathProgramCache]: Analyzing trace with hash 62951474, now seen corresponding path program 3 times [2025-02-05 10:33:25,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:25,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833565056] [2025-02-05 10:33:25,741 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:33:25,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:25,749 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 3 equivalence classes. [2025-02-05 10:33:25,770 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 10:33:25,771 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 10:33:25,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:25,851 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:33:25,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:25,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833565056] [2025-02-05 10:33:25,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833565056] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:25,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987295036] [2025-02-05 10:33:25,852 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:33:25,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:25,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:25,854 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 10:33:25,859 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 10:33:25,902 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 25 statements into 3 equivalence classes. [2025-02-05 10:33:25,920 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 10:33:25,921 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 10:33:25,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:25,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:33:25,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:33:25,970 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:33:26,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987295036] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:26,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:26,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-02-05 10:33:26,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959264268] [2025-02-05 10:33:26,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:26,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 10:33:26,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:26,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 10:33:26,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:33:26,021 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 10:33:26,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:26,187 INFO L93 Difference]: Finished difference Result 108 states and 138 transitions. [2025-02-05 10:33:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-05 10:33:26,187 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 25 [2025-02-05 10:33:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:26,188 INFO L225 Difference]: With dead ends: 108 [2025-02-05 10:33:26,188 INFO L226 Difference]: Without dead ends: 97 [2025-02-05 10:33:26,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2025-02-05 10:33:26,188 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 42 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:26,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 34 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:33:26,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-02-05 10:33:26,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2025-02-05 10:33:26,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 65 states have internal predecessors, (85), 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 10:33:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2025-02-05 10:33:26,199 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 25 [2025-02-05 10:33:26,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:26,199 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2025-02-05 10:33:26,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 10:33:26,200 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2025-02-05 10:33:26,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-05 10:33:26,201 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:26,201 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:26,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-05 10:33:26,401 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 10:33:26,402 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:26,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:26,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1056818256, now seen corresponding path program 4 times [2025-02-05 10:33:26,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:26,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667511755] [2025-02-05 10:33:26,403 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:33:26,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:26,410 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-02-05 10:33:26,413 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 23 of 27 statements. [2025-02-05 10:33:26,416 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:33:26,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:26,465 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 10:33:26,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:26,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667511755] [2025-02-05 10:33:26,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667511755] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:26,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828682521] [2025-02-05 10:33:26,465 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:33:26,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:26,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:26,468 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 10:33:26,469 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 10:33:26,508 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-02-05 10:33:26,517 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 23 of 27 statements. [2025-02-05 10:33:26,517 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:33:26,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:26,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:33:26,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 10:33:26,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 10:33:26,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828682521] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:26,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:26,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2025-02-05 10:33:26,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114210997] [2025-02-05 10:33:26,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:26,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 10:33:26,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:26,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 10:33:26,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-02-05 10:33:26,593 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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 10:33:26,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:26,671 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2025-02-05 10:33:26,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 10:33:26,672 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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 27 [2025-02-05 10:33:26,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:26,672 INFO L225 Difference]: With dead ends: 96 [2025-02-05 10:33:26,672 INFO L226 Difference]: Without dead ends: 45 [2025-02-05 10:33:26,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:33:26,673 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:26,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 27 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:33:26,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-02-05 10:33:26,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2025-02-05 10:33:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 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 10:33:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2025-02-05 10:33:26,678 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2025-02-05 10:33:26,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:26,678 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2025-02-05 10:33:26,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 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 10:33:26,678 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2025-02-05 10:33:26,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-05 10:33:26,679 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:26,679 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:26,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-05 10:33:26,879 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 10:33:26,879 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:26,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:26,879 INFO L85 PathProgramCache]: Analyzing trace with hash 310323410, now seen corresponding path program 2 times [2025-02-05 10:33:26,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:26,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466943013] [2025-02-05 10:33:26,880 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:33:26,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:26,887 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-05 10:33:26,893 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:33:26,893 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:33:26,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:33:27,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:27,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466943013] [2025-02-05 10:33:27,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466943013] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:27,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606836521] [2025-02-05 10:33:27,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:33:27,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:27,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:27,265 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 10:33:27,267 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 10:33:27,309 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-05 10:33:27,326 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:33:27,326 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:33:27,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:27,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-05 10:33:27,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:27,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-05 10:33:27,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-05 10:33:27,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-05 10:33:27,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-05 10:33:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:33:27,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:28,141 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:33:28,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606836521] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:28,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:28,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 14] total 39 [2025-02-05 10:33:28,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711461349] [2025-02-05 10:33:28,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:28,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-02-05 10:33:28,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:28,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-02-05 10:33:28,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1337, Unknown=0, NotChecked=0, Total=1482 [2025-02-05 10:33:28,143 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 39 states have internal predecessors, (62), 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 10:33:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:29,714 INFO L93 Difference]: Finished difference Result 119 states and 158 transitions. [2025-02-05 10:33:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-02-05 10:33:29,715 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 39 states have internal predecessors, (62), 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 31 [2025-02-05 10:33:29,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:29,716 INFO L225 Difference]: With dead ends: 119 [2025-02-05 10:33:29,716 INFO L226 Difference]: Without dead ends: 115 [2025-02-05 10:33:29,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1645 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=766, Invalid=5714, Unknown=0, NotChecked=0, Total=6480 [2025-02-05 10:33:29,718 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 60 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:29,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 45 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 10:33:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-02-05 10:33:29,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 86. [2025-02-05 10:33:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.3058823529411765) internal successors, (111), 85 states have internal predecessors, (111), 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 10:33:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2025-02-05 10:33:29,738 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 111 transitions. Word has length 31 [2025-02-05 10:33:29,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:29,738 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 111 transitions. [2025-02-05 10:33:29,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 39 states have internal predecessors, (62), 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 10:33:29,738 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 111 transitions. [2025-02-05 10:33:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-05 10:33:29,738 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:29,738 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:29,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 10:33:29,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-05 10:33:29,943 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:29,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:29,943 INFO L85 PathProgramCache]: Analyzing trace with hash 311246931, now seen corresponding path program 2 times [2025-02-05 10:33:29,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:29,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471368551] [2025-02-05 10:33:29,943 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:33:29,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:29,951 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-05 10:33:29,965 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:33:29,968 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:33:29,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:33:30,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:30,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471368551] [2025-02-05 10:33:30,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471368551] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:30,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257237094] [2025-02-05 10:33:30,171 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:33:30,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:30,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:30,173 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:33:30,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-05 10:33:30,219 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-05 10:33:30,240 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:33:30,240 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:33:30,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:30,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-05 10:33:30,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:30,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-05 10:33:30,273 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:33:30,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2025-02-05 10:33:30,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:33:30,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2025-02-05 10:33:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:33:30,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:30,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2025-02-05 10:33:30,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2025-02-05 10:33:30,409 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:33:30,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257237094] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:30,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:30,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2025-02-05 10:33:30,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37959188] [2025-02-05 10:33:30,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:30,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-05 10:33:30,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:30,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-05 10:33:30,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2025-02-05 10:33:30,410 INFO L87 Difference]: Start difference. First operand 86 states and 111 transitions. Second operand has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 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 10:33:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:30,554 INFO L93 Difference]: Finished difference Result 147 states and 196 transitions. [2025-02-05 10:33:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-05 10:33:30,555 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 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 31 [2025-02-05 10:33:30,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:30,556 INFO L225 Difference]: With dead ends: 147 [2025-02-05 10:33:30,556 INFO L226 Difference]: Without dead ends: 101 [2025-02-05 10:33:30,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2025-02-05 10:33:30,557 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:30,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 74 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:33:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-02-05 10:33:30,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 88. [2025-02-05 10:33:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.2988505747126438) internal successors, (113), 87 states have internal predecessors, (113), 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 10:33:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 113 transitions. [2025-02-05 10:33:30,569 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 113 transitions. Word has length 31 [2025-02-05 10:33:30,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:30,569 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 113 transitions. [2025-02-05 10:33:30,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 19 states have internal predecessors, (41), 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 10:33:30,569 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 113 transitions. [2025-02-05 10:33:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-05 10:33:30,570 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:30,570 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:30,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-05 10:33:30,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:30,774 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:30,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:30,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1196304878, now seen corresponding path program 2 times [2025-02-05 10:33:30,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:30,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043419315] [2025-02-05 10:33:30,775 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:33:30,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:30,780 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-05 10:33:30,789 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:33:30,789 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:33:30,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:33:31,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:31,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043419315] [2025-02-05 10:33:31,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043419315] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:31,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309662048] [2025-02-05 10:33:31,039 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:33:31,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:31,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:31,044 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:33:31,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-05 10:33:31,098 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-05 10:33:31,117 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:33:31,117 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:33:31,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:31,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-05 10:33:31,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:31,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-05 10:33:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:33:31,245 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:31,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2025-02-05 10:33:31,357 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-02-05 10:33:31,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2025-02-05 10:33:31,403 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:33:31,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309662048] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:31,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:31,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 11] total 28 [2025-02-05 10:33:31,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442682533] [2025-02-05 10:33:31,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:31,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-05 10:33:31,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:31,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-05 10:33:31,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2025-02-05 10:33:31,405 INFO L87 Difference]: Start difference. First operand 88 states and 113 transitions. Second operand has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 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 10:33:31,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:31,877 INFO L93 Difference]: Finished difference Result 209 states and 277 transitions. [2025-02-05 10:33:31,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-05 10:33:31,877 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 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 31 [2025-02-05 10:33:31,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:31,878 INFO L225 Difference]: With dead ends: 209 [2025-02-05 10:33:31,878 INFO L226 Difference]: Without dead ends: 163 [2025-02-05 10:33:31,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=354, Invalid=1452, Unknown=0, NotChecked=0, Total=1806 [2025-02-05 10:33:31,879 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 164 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:31,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 71 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:33:31,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2025-02-05 10:33:31,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 121. [2025-02-05 10:33:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.275) internal successors, (153), 120 states have internal predecessors, (153), 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 10:33:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 153 transitions. [2025-02-05 10:33:31,908 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 153 transitions. Word has length 31 [2025-02-05 10:33:31,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:31,908 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 153 transitions. [2025-02-05 10:33:31,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 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 10:33:31,908 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 153 transitions. [2025-02-05 10:33:31,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-05 10:33:31,909 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:31,909 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:31,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-05 10:33:32,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:32,109 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:32,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:32,110 INFO L85 PathProgramCache]: Analyzing trace with hash 480931090, now seen corresponding path program 5 times [2025-02-05 10:33:32,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:32,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029017666] [2025-02-05 10:33:32,110 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:33:32,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:32,117 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 32 statements into 4 equivalence classes. [2025-02-05 10:33:32,126 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 10:33:32,126 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-05 10:33:32,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:33:32,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:32,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029017666] [2025-02-05 10:33:32,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029017666] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:32,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45285824] [2025-02-05 10:33:32,210 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:33:32,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:32,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:32,215 INFO L229 MonitoredProcess]: Starting monitored process 15 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 10:33:32,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-05 10:33:32,268 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 32 statements into 4 equivalence classes. [2025-02-05 10:33:32,310 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 10:33:32,310 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-05 10:33:32,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:32,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 10:33:32,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:33:32,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:33:32,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45285824] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:32,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:32,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2025-02-05 10:33:32,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914534967] [2025-02-05 10:33:32,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:32,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-05 10:33:32,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:32,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-05 10:33:32,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2025-02-05 10:33:32,417 INFO L87 Difference]: Start difference. First operand 121 states and 153 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 10:33:32,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:32,640 INFO L93 Difference]: Finished difference Result 179 states and 222 transitions. [2025-02-05 10:33:32,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-05 10:33:32,640 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 32 [2025-02-05 10:33:32,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:32,641 INFO L225 Difference]: With dead ends: 179 [2025-02-05 10:33:32,641 INFO L226 Difference]: Without dead ends: 166 [2025-02-05 10:33:32,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 51 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2025-02-05 10:33:32,641 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 89 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:32,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 21 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:33:32,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-02-05 10:33:32,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 115. [2025-02-05 10:33:32,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.263157894736842) internal successors, (144), 114 states have internal predecessors, (144), 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 10:33:32,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 144 transitions. [2025-02-05 10:33:32,661 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 144 transitions. Word has length 32 [2025-02-05 10:33:32,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:32,661 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 144 transitions. [2025-02-05 10:33:32,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 10:33:32,661 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 144 transitions. [2025-02-05 10:33:32,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-05 10:33:32,662 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:32,662 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:32,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-05 10:33:32,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-05 10:33:32,863 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:32,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:32,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1104470894, now seen corresponding path program 6 times [2025-02-05 10:33:32,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:32,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70959912] [2025-02-05 10:33:32,863 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:33:32,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:32,871 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 34 statements into 5 equivalence classes. [2025-02-05 10:33:32,887 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 10:33:32,888 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-05 10:33:32,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:33:32,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:32,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70959912] [2025-02-05 10:33:32,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70959912] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:32,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139283776] [2025-02-05 10:33:32,968 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:33:32,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:32,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:32,970 INFO L229 MonitoredProcess]: Starting monitored process 16 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 10:33:32,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-05 10:33:33,027 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 34 statements into 5 equivalence classes. [2025-02-05 10:33:33,061 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 10:33:33,061 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-05 10:33:33,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:33,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 10:33:33,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:33:33,138 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:33,190 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:33:33,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139283776] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:33,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:33,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-02-05 10:33:33,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732341789] [2025-02-05 10:33:33,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:33,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-05 10:33:33,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:33,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-05 10:33:33,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-02-05 10:33:33,191 INFO L87 Difference]: Start difference. First operand 115 states and 144 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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 10:33:33,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:33,307 INFO L93 Difference]: Finished difference Result 144 states and 178 transitions. [2025-02-05 10:33:33,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 10:33:33,308 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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 34 [2025-02-05 10:33:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:33,308 INFO L225 Difference]: With dead ends: 144 [2025-02-05 10:33:33,308 INFO L226 Difference]: Without dead ends: 55 [2025-02-05 10:33:33,309 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2025-02-05 10:33:33,310 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 50 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:33,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 41 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:33:33,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-05 10:33:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2025-02-05 10:33:33,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 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 10:33:33,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2025-02-05 10:33:33,318 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 34 [2025-02-05 10:33:33,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:33,318 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2025-02-05 10:33:33,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 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 10:33:33,318 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2025-02-05 10:33:33,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-05 10:33:33,319 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:33,319 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:33,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-05 10:33:33,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-05 10:33:33,520 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:33,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:33,520 INFO L85 PathProgramCache]: Analyzing trace with hash 531594162, now seen corresponding path program 3 times [2025-02-05 10:33:33,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:33,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709412273] [2025-02-05 10:33:33,520 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:33:33,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:33,526 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-02-05 10:33:33,540 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 10:33:33,540 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-05 10:33:33,540 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 10:33:33,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:33,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709412273] [2025-02-05 10:33:33,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709412273] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:33,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962769973] [2025-02-05 10:33:33,909 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:33:33,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:33,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:33,911 INFO L229 MonitoredProcess]: Starting monitored process 17 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 10:33:33,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-05 10:33:33,965 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-02-05 10:33:34,011 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 10:33:34,012 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-05 10:33:34,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:34,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-02-05 10:33:34,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:34,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-05 10:33:34,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-05 10:33:34,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-05 10:33:34,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-05 10:33:34,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-05 10:33:34,474 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 10:33:34,474 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 10:33:35,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962769973] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:35,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:35,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 45 [2025-02-05 10:33:35,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696838480] [2025-02-05 10:33:35,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:35,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-05 10:33:35,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:35,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-05 10:33:35,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1849, Unknown=0, NotChecked=0, Total=1980 [2025-02-05 10:33:35,084 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 45 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 45 states have internal predecessors, (79), 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 10:33:38,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:38,187 INFO L93 Difference]: Finished difference Result 177 states and 231 transitions. [2025-02-05 10:33:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2025-02-05 10:33:38,187 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 45 states have internal predecessors, (79), 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 38 [2025-02-05 10:33:38,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:38,190 INFO L225 Difference]: With dead ends: 177 [2025-02-05 10:33:38,190 INFO L226 Difference]: Without dead ends: 155 [2025-02-05 10:33:38,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2701 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=830, Invalid=10726, Unknown=0, NotChecked=0, Total=11556 [2025-02-05 10:33:38,192 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 126 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:38,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 122 Invalid, 2457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-05 10:33:38,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-02-05 10:33:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 131. [2025-02-05 10:33:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.2538461538461538) internal successors, (163), 130 states have internal predecessors, (163), 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 10:33:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 163 transitions. [2025-02-05 10:33:38,223 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 163 transitions. Word has length 38 [2025-02-05 10:33:38,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:38,223 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 163 transitions. [2025-02-05 10:33:38,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 45 states have internal predecessors, (79), 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 10:33:38,223 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 163 transitions. [2025-02-05 10:33:38,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-05 10:33:38,223 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:38,223 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:38,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-05 10:33:38,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-05 10:33:38,424 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:38,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:38,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1529590036, now seen corresponding path program 3 times [2025-02-05 10:33:38,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:38,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65407368] [2025-02-05 10:33:38,424 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:33:38,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:38,432 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-02-05 10:33:38,444 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 26 of 38 statements. [2025-02-05 10:33:38,444 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 10:33:38,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 10:33:38,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:38,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65407368] [2025-02-05 10:33:38,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65407368] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:38,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303212896] [2025-02-05 10:33:38,792 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:33:38,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:38,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:38,794 INFO L229 MonitoredProcess]: Starting monitored process 18 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 10:33:38,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-05 10:33:38,849 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-02-05 10:33:38,868 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 26 of 38 statements. [2025-02-05 10:33:38,869 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 10:33:38,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:38,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 10:33:38,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:38,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2025-02-05 10:33:38,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:33:38,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 17 [2025-02-05 10:33:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-05 10:33:39,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-05 10:33:39,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303212896] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:39,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:39,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 25 [2025-02-05 10:33:39,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832681558] [2025-02-05 10:33:39,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:39,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 10:33:39,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:39,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 10:33:39,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2025-02-05 10:33:39,144 INFO L87 Difference]: Start difference. First operand 131 states and 163 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 10:33:40,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:40,399 INFO L93 Difference]: Finished difference Result 262 states and 339 transitions. [2025-02-05 10:33:40,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-02-05 10:33:40,399 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 38 [2025-02-05 10:33:40,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:40,400 INFO L225 Difference]: With dead ends: 262 [2025-02-05 10:33:40,400 INFO L226 Difference]: Without dead ends: 221 [2025-02-05 10:33:40,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1026, Invalid=3530, Unknown=0, NotChecked=0, Total=4556 [2025-02-05 10:33:40,402 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 203 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:40,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 138 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:33:40,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2025-02-05 10:33:40,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 172. [2025-02-05 10:33:40,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.304093567251462) internal successors, (223), 171 states have internal predecessors, (223), 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 10:33:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 223 transitions. [2025-02-05 10:33:40,436 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 223 transitions. Word has length 38 [2025-02-05 10:33:40,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:40,436 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 223 transitions. [2025-02-05 10:33:40,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 states have internal predecessors, (48), 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 10:33:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 223 transitions. [2025-02-05 10:33:40,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-05 10:33:40,437 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:40,437 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:40,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-05 10:33:40,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:40,637 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:40,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1377785327, now seen corresponding path program 4 times [2025-02-05 10:33:40,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:40,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043205737] [2025-02-05 10:33:40,638 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:33:40,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:40,648 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-02-05 10:33:40,661 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 35 of 39 statements. [2025-02-05 10:33:40,661 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:33:40,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 10:33:40,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:40,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043205737] [2025-02-05 10:33:40,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043205737] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:40,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319910149] [2025-02-05 10:33:40,872 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:33:40,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:40,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:40,873 INFO L229 MonitoredProcess]: Starting monitored process 19 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 10:33:40,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-05 10:33:40,935 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-02-05 10:33:40,948 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 35 of 39 statements. [2025-02-05 10:33:40,948 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:33:40,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:40,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-05 10:33:40,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:40,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-02-05 10:33:41,007 INFO L349 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2025-02-05 10:33:41,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 37 [2025-02-05 10:33:41,124 INFO L349 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2025-02-05 10:33:41,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 58 [2025-02-05 10:33:41,227 INFO L349 Elim1Store]: treesize reduction 35, result has 41.7 percent of original size [2025-02-05 10:33:41,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 69 treesize of output 80 [2025-02-05 10:33:41,366 INFO L349 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2025-02-05 10:33:41,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 35 [2025-02-05 10:33:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-05 10:33:41,445 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 10:33:41,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319910149] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:41,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:41,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 18] total 35 [2025-02-05 10:33:41,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811147203] [2025-02-05 10:33:41,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:41,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-05 10:33:41,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:41,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-05 10:33:41,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2025-02-05 10:33:41,968 INFO L87 Difference]: Start difference. First operand 172 states and 223 transitions. Second operand has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 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 10:33:42,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:42,808 INFO L93 Difference]: Finished difference Result 190 states and 244 transitions. [2025-02-05 10:33:42,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-05 10:33:42,809 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 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 10:33:42,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:42,809 INFO L225 Difference]: With dead ends: 190 [2025-02-05 10:33:42,809 INFO L226 Difference]: Without dead ends: 118 [2025-02-05 10:33:42,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=603, Invalid=2153, Unknown=0, NotChecked=0, Total=2756 [2025-02-05 10:33:42,811 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:42,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 71 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:33:42,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-02-05 10:33:42,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 100. [2025-02-05 10:33:42,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2121212121212122) internal successors, (120), 99 states have internal predecessors, (120), 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 10:33:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2025-02-05 10:33:42,830 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 39 [2025-02-05 10:33:42,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:42,830 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2025-02-05 10:33:42,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.8) internal successors, (63), 35 states have internal predecessors, (63), 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 10:33:42,830 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2025-02-05 10:33:42,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-05 10:33:42,830 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:42,831 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:42,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-05 10:33:43,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:43,031 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:43,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:43,032 INFO L85 PathProgramCache]: Analyzing trace with hash -380712974, now seen corresponding path program 7 times [2025-02-05 10:33:43,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:43,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733344613] [2025-02-05 10:33:43,032 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:33:43,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:43,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 10:33:43,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 10:33:43,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:43,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:43,151 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 10:33:43,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:43,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733344613] [2025-02-05 10:33:43,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733344613] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:43,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470762446] [2025-02-05 10:33:43,151 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:33:43,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:43,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:43,154 INFO L229 MonitoredProcess]: Starting monitored process 20 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 10:33:43,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-05 10:33:43,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 10:33:43,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 10:33:43,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:33:43,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:43,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 10:33:43,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 10:33:43,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-05 10:33:43,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470762446] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:43,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:43,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2025-02-05 10:33:43,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601050841] [2025-02-05 10:33:43,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:43,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-05 10:33:43,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:43,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-05 10:33:43,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2025-02-05 10:33:43,404 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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 10:33:43,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:33:43,698 INFO L93 Difference]: Finished difference Result 141 states and 169 transitions. [2025-02-05 10:33:43,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-05 10:33:43,699 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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 10:33:43,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:33:43,699 INFO L225 Difference]: With dead ends: 141 [2025-02-05 10:33:43,699 INFO L226 Difference]: Without dead ends: 117 [2025-02-05 10:33:43,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 61 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2025-02-05 10:33:43,700 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 104 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:33:43,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 33 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:33:43,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-02-05 10:33:43,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 95. [2025-02-05 10:33:43,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.202127659574468) internal successors, (113), 94 states have internal predecessors, (113), 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 10:33:43,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2025-02-05 10:33:43,718 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 39 [2025-02-05 10:33:43,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:33:43,718 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2025-02-05 10:33:43,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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 10:33:43,718 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2025-02-05 10:33:43,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-05 10:33:43,718 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:33:43,718 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:33:43,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-05 10:33:43,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:43,919 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:33:43,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:33:43,920 INFO L85 PathProgramCache]: Analyzing trace with hash 449866224, now seen corresponding path program 5 times [2025-02-05 10:33:43,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:33:43,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025509682] [2025-02-05 10:33:43,920 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:33:43,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:33:43,926 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 6 equivalence classes. [2025-02-05 10:33:43,938 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 45 of 45 statements. [2025-02-05 10:33:43,938 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-05 10:33:43,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-05 10:33:44,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:33:44,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025509682] [2025-02-05 10:33:44,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025509682] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:33:44,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812232189] [2025-02-05 10:33:44,534 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:33:44,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:33:44,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:33:44,536 INFO L229 MonitoredProcess]: Starting monitored process 21 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 10:33:44,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-05 10:33:44,601 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 6 equivalence classes. [2025-02-05 10:33:44,692 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 45 of 45 statements. [2025-02-05 10:33:44,693 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-05 10:33:44,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:33:44,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-02-05 10:33:44,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:33:44,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-05 10:33:44,789 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-02-05 10:33:44,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 13 [2025-02-05 10:33:44,835 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:33:44,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2025-02-05 10:33:44,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:33:44,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 24 [2025-02-05 10:33:44,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:33:44,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 24 [2025-02-05 10:33:44,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2025-02-05 10:33:44,984 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2025-02-05 10:33:44,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 26 [2025-02-05 10:33:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 18 proven. 65 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 10:33:45,186 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:33:47,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 529 treesize of output 489 [2025-02-05 10:33:48,481 INFO L349 Elim1Store]: treesize reduction 32, result has 56.2 percent of original size [2025-02-05 10:33:48,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 65329117 treesize of output 61010437 [2025-02-05 10:33:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 17 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:33:52,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812232189] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:33:52,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:33:52,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 25] total 60 [2025-02-05 10:33:52,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422981728] [2025-02-05 10:33:52,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:33:52,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2025-02-05 10:33:52,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:33:52,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2025-02-05 10:33:52,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=3238, Unknown=0, NotChecked=0, Total=3540 [2025-02-05 10:33:52,306 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 60 states, 60 states have (on average 1.7666666666666666) internal successors, (106), 60 states have internal predecessors, (106), 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 10:34:30,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2025-02-05 10:34:39,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]