./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array21_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array21_pattern.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 f1a738dced8b73ebc8edf3e480fddcd32bb19127a8255980e93fab5e96705ab3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 17:12:44,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 17:12:44,694 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 17:12:44,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 17:12:44,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 17:12:44,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 17:12:44,732 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 17:12:44,732 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 17:12:44,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 17:12:44,733 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 17:12:44,734 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 17:12:44,734 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 17:12:44,734 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 17:12:44,734 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 17:12:44,735 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 17:12:44,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 17:12:44,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 17:12:44,735 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 17:12:44,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 17:12:44,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 17:12:44,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 17:12:44,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 17:12:44,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 17:12:44,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 17:12:44,736 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 17:12:44,736 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 17:12:44,736 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 17:12:44,737 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 17:12:44,737 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 17:12:44,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 17:12:44,737 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 17:12:44,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 17:12:44,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 17:12:44,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 17:12:44,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 17:12:44,738 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 17:12:44,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 17:12:44,738 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 17:12:44,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 17:12:44,738 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 17:12:44,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 17:12:44,739 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 17:12:44,739 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 17:12:44,739 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 -> f1a738dced8b73ebc8edf3e480fddcd32bb19127a8255980e93fab5e96705ab3 [2025-02-07 17:12:45,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 17:12:45,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 17:12:45,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 17:12:45,039 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 17:12:45,039 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 17:12:45,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array21_pattern.c [2025-02-07 17:12:46,266 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1d33d879c/f4f3675ab9a94445ae6e34ebae489bd6/FLAGec635a4cf [2025-02-07 17:12:46,491 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 17:12:46,492 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-patterns/array21_pattern.c [2025-02-07 17:12:46,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1d33d879c/f4f3675ab9a94445ae6e34ebae489bd6/FLAGec635a4cf [2025-02-07 17:12:46,509 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1d33d879c/f4f3675ab9a94445ae6e34ebae489bd6 [2025-02-07 17:12:46,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 17:12:46,512 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 17:12:46,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 17:12:46,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 17:12:46,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 17:12:46,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 05:12:46" (1/1) ... [2025-02-07 17:12:46,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b5fcf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46, skipping insertion in model container [2025-02-07 17:12:46,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 05:12:46" (1/1) ... [2025-02-07 17:12:46,532 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 17:12:46,673 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-patterns/array21_pattern.c[1340,1353] [2025-02-07 17:12:46,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 17:12:46,710 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 17:12:46,719 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-patterns/array21_pattern.c[1340,1353] [2025-02-07 17:12:46,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 17:12:46,749 INFO L204 MainTranslator]: Completed translation [2025-02-07 17:12:46,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46 WrapperNode [2025-02-07 17:12:46,751 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 17:12:46,752 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 17:12:46,752 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 17:12:46,752 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 17:12:46,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46" (1/1) ... [2025-02-07 17:12:46,761 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46" (1/1) ... [2025-02-07 17:12:46,782 INFO L138 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2025-02-07 17:12:46,782 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 17:12:46,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 17:12:46,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 17:12:46,783 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 17:12:46,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46" (1/1) ... [2025-02-07 17:12:46,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46" (1/1) ... [2025-02-07 17:12:46,798 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46" (1/1) ... [2025-02-07 17:12:46,810 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-07 17:12:46,813 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46" (1/1) ... [2025-02-07 17:12:46,814 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46" (1/1) ... [2025-02-07 17:12:46,817 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46" (1/1) ... [2025-02-07 17:12:46,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46" (1/1) ... [2025-02-07 17:12:46,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46" (1/1) ... [2025-02-07 17:12:46,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46" (1/1) ... [2025-02-07 17:12:46,828 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 17:12:46,830 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 17:12:46,831 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 17:12:46,831 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 17:12:46,831 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46" (1/1) ... [2025-02-07 17:12:46,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 17:12:46,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:46,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 17:12:46,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 17:12:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2025-02-07 17:12:46,886 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2025-02-07 17:12:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 17:12:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-07 17:12:46,886 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-07 17:12:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 17:12:46,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 17:12:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 17:12:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 17:12:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 17:12:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 17:12:46,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 17:12:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 17:12:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 17:12:46,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 17:12:46,959 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 17:12:46,961 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 17:12:47,137 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L52: call ULTIMATE.dealloc(main_~#array~0#1.base, main_~#array~0#1.offset);havoc main_~#array~0#1.base, main_~#array~0#1.offset; [2025-02-07 17:12:47,153 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2025-02-07 17:12:47,154 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 17:12:47,166 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 17:12:47,168 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 17:12:47,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:12:47 BoogieIcfgContainer [2025-02-07 17:12:47,168 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 17:12:47,170 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 17:12:47,170 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 17:12:47,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 17:12:47,174 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 05:12:46" (1/3) ... [2025-02-07 17:12:47,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2041b4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 05:12:47, skipping insertion in model container [2025-02-07 17:12:47,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:46" (2/3) ... [2025-02-07 17:12:47,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2041b4f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 05:12:47, skipping insertion in model container [2025-02-07 17:12:47,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:12:47" (3/3) ... [2025-02-07 17:12:47,177 INFO L128 eAbstractionObserver]: Analyzing ICFG array21_pattern.c [2025-02-07 17:12:47,192 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 17:12:47,195 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array21_pattern.c that has 3 procedures, 34 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-02-07 17:12:47,248 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 17:12:47,259 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;@bb96a49, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 17:12:47,260 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 17:12:47,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 17:12:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-07 17:12:47,271 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:47,271 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:47,272 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:47,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:47,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1990686812, now seen corresponding path program 1 times [2025-02-07 17:12:47,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:47,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231681690] [2025-02-07 17:12:47,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:47,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:47,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-07 17:12:47,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-07 17:12:47,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:47,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:47,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:12:47,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:47,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231681690] [2025-02-07 17:12:47,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231681690] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:12:47,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:12:47,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 17:12:47,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332513454] [2025-02-07 17:12:47,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:12:47,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 17:12:47,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:47,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 17:12:47,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 17:12:47,431 INFO L87 Difference]: Start difference. First operand has 34 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 17:12:47,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:47,446 INFO L93 Difference]: Finished difference Result 66 states and 94 transitions. [2025-02-07 17:12:47,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 17:12:47,448 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2025-02-07 17:12:47,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:47,452 INFO L225 Difference]: With dead ends: 66 [2025-02-07 17:12:47,452 INFO L226 Difference]: Without dead ends: 30 [2025-02-07 17:12:47,454 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 [2025-02-07 17:12:47,459 INFO L435 NwaCegarLoop]: 44 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, 44 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 [2025-02-07 17:12:47,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:12:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2025-02-07 17:12:47,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2025-02-07 17:12:47,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 17:12:47,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2025-02-07 17:12:47,495 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 13 [2025-02-07 17:12:47,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:47,495 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2025-02-07 17:12:47,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 17:12:47,496 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2025-02-07 17:12:47,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-07 17:12:47,498 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:47,498 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:47,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 17:12:47,499 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:47,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:47,500 INFO L85 PathProgramCache]: Analyzing trace with hash -686001318, now seen corresponding path program 1 times [2025-02-07 17:12:47,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:47,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100642337] [2025-02-07 17:12:47,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:47,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:47,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-07 17:12:47,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 17:12:47,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:47,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 17:12:47,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:47,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100642337] [2025-02-07 17:12:47,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100642337] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:47,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861977953] [2025-02-07 17:12:47,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:47,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:47,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:47,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:47,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-07 17:12:47,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-07 17:12:47,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 17:12:47,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:47,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:47,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 17:12:47,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 17:12:48,107 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 17:12:48,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861977953] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:12:48,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:12:48,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-02-07 17:12:48,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460728276] [2025-02-07 17:12:48,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:12:48,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 17:12:48,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:48,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 17:12:48,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-07 17:12:48,111 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-07 17:12:48,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:48,218 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2025-02-07 17:12:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 17:12:48,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2025-02-07 17:12:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:48,219 INFO L225 Difference]: With dead ends: 68 [2025-02-07 17:12:48,220 INFO L226 Difference]: Without dead ends: 37 [2025-02-07 17:12:48,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-07 17:12:48,220 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:48,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 131 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:12:48,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-07 17:12:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2025-02-07 17:12:48,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 17:12:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2025-02-07 17:12:48,230 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 33 [2025-02-07 17:12:48,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:48,231 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2025-02-07 17:12:48,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-07 17:12:48,232 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2025-02-07 17:12:48,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-07 17:12:48,234 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:48,234 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:48,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-07 17:12:48,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:48,435 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:48,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:48,436 INFO L85 PathProgramCache]: Analyzing trace with hash 288500504, now seen corresponding path program 1 times [2025-02-07 17:12:48,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:48,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69234117] [2025-02-07 17:12:48,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:48,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:48,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-07 17:12:48,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-07 17:12:48,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:48,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 17:12:48,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:48,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69234117] [2025-02-07 17:12:48,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69234117] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:12:48,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:12:48,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 17:12:48,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370269670] [2025-02-07 17:12:48,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:12:48,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 17:12:48,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:48,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 17:12:48,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:12:48,584 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 17:12:48,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:48,626 INFO L93 Difference]: Finished difference Result 63 states and 87 transitions. [2025-02-07 17:12:48,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 17:12:48,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2025-02-07 17:12:48,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:48,627 INFO L225 Difference]: With dead ends: 63 [2025-02-07 17:12:48,627 INFO L226 Difference]: Without dead ends: 36 [2025-02-07 17:12:48,628 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 [2025-02-07 17:12:48,628 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:48,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 62 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:12:48,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-07 17:12:48,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2025-02-07 17:12:48,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 17:12:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2025-02-07 17:12:48,633 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 35 [2025-02-07 17:12:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:48,633 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2025-02-07 17:12:48,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 17:12:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2025-02-07 17:12:48,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-07 17:12:48,634 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:48,634 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:48,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-07 17:12:48,635 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:48,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:48,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1129469955, now seen corresponding path program 1 times [2025-02-07 17:12:48,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:48,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551181854] [2025-02-07 17:12:48,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:48,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:48,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-07 17:12:48,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-07 17:12:48,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:48,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-07 17:12:48,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:48,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551181854] [2025-02-07 17:12:48,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551181854] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:48,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249788740] [2025-02-07 17:12:48,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:48,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:48,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:48,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:48,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-07 17:12:48,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-07 17:12:48,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-07 17:12:48,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:48,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:48,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-07 17:12:48,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-07 17:12:48,977 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-07 17:12:49,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249788740] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:12:49,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:12:49,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2025-02-07 17:12:49,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101545569] [2025-02-07 17:12:49,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:49,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-07 17:12:49,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:49,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-07 17:12:49,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-07 17:12:49,076 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-07 17:12:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:49,249 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2025-02-07 17:12:49,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-07 17:12:49,250 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 36 [2025-02-07 17:12:49,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:49,251 INFO L225 Difference]: With dead ends: 43 [2025-02-07 17:12:49,251 INFO L226 Difference]: Without dead ends: 40 [2025-02-07 17:12:49,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2025-02-07 17:12:49,252 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 33 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:49,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 137 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:12:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-02-07 17:12:49,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2025-02-07 17:12:49,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 17:12:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2025-02-07 17:12:49,263 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 36 [2025-02-07 17:12:49,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:49,265 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2025-02-07 17:12:49,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-07 17:12:49,265 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2025-02-07 17:12:49,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-07 17:12:49,266 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:49,266 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:49,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-07 17:12:49,467 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 [2025-02-07 17:12:49,467 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:49,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:49,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1355345093, now seen corresponding path program 1 times [2025-02-07 17:12:49,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:49,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459864890] [2025-02-07 17:12:49,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:49,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:49,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-07 17:12:49,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-07 17:12:49,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:49,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-07 17:12:49,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:49,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459864890] [2025-02-07 17:12:49,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459864890] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:49,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730985960] [2025-02-07 17:12:49,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:49,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:49,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:49,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:49,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-07 17:12:49,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-07 17:12:49,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-07 17:12:49,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:49,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:49,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-07 17:12:49,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:49,763 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 17:12:49,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-07 17:12:49,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730985960] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:12:49,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:12:49,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2025-02-07 17:12:49,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879264771] [2025-02-07 17:12:49,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:49,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-07 17:12:49,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:49,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-07 17:12:49,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-02-07 17:12:49,907 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-07 17:12:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:50,122 INFO L93 Difference]: Finished difference Result 71 states and 93 transitions. [2025-02-07 17:12:50,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-07 17:12:50,123 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 39 [2025-02-07 17:12:50,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:50,124 INFO L225 Difference]: With dead ends: 71 [2025-02-07 17:12:50,125 INFO L226 Difference]: Without dead ends: 42 [2025-02-07 17:12:50,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2025-02-07 17:12:50,127 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 95 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:50,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 147 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 17:12:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-02-07 17:12:50,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2025-02-07 17:12:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 17:12:50,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2025-02-07 17:12:50,139 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 39 [2025-02-07 17:12:50,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:50,139 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2025-02-07 17:12:50,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-07 17:12:50,139 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2025-02-07 17:12:50,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-07 17:12:50,140 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:50,140 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:50,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-07 17:12:50,344 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 [2025-02-07 17:12:50,344 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:50,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:50,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1870566054, now seen corresponding path program 2 times [2025-02-07 17:12:50,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:50,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963547554] [2025-02-07 17:12:50,345 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:12:50,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:50,354 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 41 statements into 2 equivalence classes. [2025-02-07 17:12:50,363 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-02-07 17:12:50,363 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:12:50,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-07 17:12:50,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:50,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963547554] [2025-02-07 17:12:50,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963547554] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:50,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145788223] [2025-02-07 17:12:50,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:12:50,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:50,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:50,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:50,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-07 17:12:50,513 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 41 statements into 2 equivalence classes. [2025-02-07 17:12:50,534 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 41 of 41 statements. [2025-02-07 17:12:50,534 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:12:50,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:50,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 17:12:50,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:50,606 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 17:12:50,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 17:12:50,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145788223] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:12:50,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:12:50,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-02-07 17:12:50,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746503536] [2025-02-07 17:12:50,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:50,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-07 17:12:50,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:50,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-07 17:12:50,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-02-07 17:12:50,679 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-07 17:12:50,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:50,894 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2025-02-07 17:12:50,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 17:12:50,895 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 41 [2025-02-07 17:12:50,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:50,896 INFO L225 Difference]: With dead ends: 82 [2025-02-07 17:12:50,896 INFO L226 Difference]: Without dead ends: 54 [2025-02-07 17:12:50,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2025-02-07 17:12:50,897 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 35 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:50,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 176 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:12:50,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-02-07 17:12:50,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2025-02-07 17:12:50,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 17:12:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2025-02-07 17:12:50,913 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 41 [2025-02-07 17:12:50,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:50,914 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2025-02-07 17:12:50,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-07 17:12:50,915 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2025-02-07 17:12:50,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-02-07 17:12:50,915 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:50,915 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:50,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-07 17:12:51,116 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 [2025-02-07 17:12:51,116 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:51,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:51,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1259837094, now seen corresponding path program 3 times [2025-02-07 17:12:51,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:51,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609818218] [2025-02-07 17:12:51,117 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:12:51,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:51,126 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 7 equivalence classes. [2025-02-07 17:12:51,162 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 49 of 49 statements. [2025-02-07 17:12:51,163 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-07 17:12:51,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 17:12:51,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [60372753] [2025-02-07 17:12:51,166 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:12:51,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:51,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:51,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:51,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-07 17:12:51,220 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 7 equivalence classes. [2025-02-07 17:12:51,385 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 49 of 49 statements. [2025-02-07 17:12:51,385 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-07 17:12:51,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:51,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-02-07 17:12:51,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:51,471 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 [2025-02-07 17:12:51,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 17:12:51,651 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2025-02-07 17:12:51,652 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 3 case distinctions, treesize of input 28 treesize of output 30 [2025-02-07 17:12:51,732 INFO L349 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2025-02-07 17:12:51,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 44 [2025-02-07 17:12:52,526 INFO L349 Elim1Store]: treesize reduction 154, result has 30.9 percent of original size [2025-02-07 17:12:52,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 66 treesize of output 81 [2025-02-07 17:12:54,197 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:12:54,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 124 treesize of output 56 [2025-02-07 17:12:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:12:54,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:55,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:55,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609818218] [2025-02-07 17:12:55,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 17:12:55,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60372753] [2025-02-07 17:12:55,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60372753] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:55,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:12:55,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2025-02-07 17:12:55,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784488468] [2025-02-07 17:12:55,171 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:55,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-07 17:12:55,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:55,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-07 17:12:55,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1193, Unknown=0, NotChecked=0, Total=1332 [2025-02-07 17:12:55,173 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 17:12:55,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:55,831 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2025-02-07 17:12:55,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-07 17:12:55,831 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2025-02-07 17:12:55,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:55,833 INFO L225 Difference]: With dead ends: 103 [2025-02-07 17:12:55,834 INFO L226 Difference]: Without dead ends: 94 [2025-02-07 17:12:55,835 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2025-02-07 17:12:55,836 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:55,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 371 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-07 17:12:55,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2025-02-07 17:12:55,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 78. [2025-02-07 17:12:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.2698412698412698) internal successors, (80), 63 states have internal predecessors, (80), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-07 17:12:55,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2025-02-07 17:12:55,875 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 49 [2025-02-07 17:12:55,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:55,877 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2025-02-07 17:12:55,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 17:12:55,877 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2025-02-07 17:12:55,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-02-07 17:12:55,878 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:55,878 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:55,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-07 17:12:56,084 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 [2025-02-07 17:12:56,084 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:56,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:56,085 INFO L85 PathProgramCache]: Analyzing trace with hash 247714715, now seen corresponding path program 1 times [2025-02-07 17:12:56,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:56,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620561856] [2025-02-07 17:12:56,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:56,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:56,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-02-07 17:12:56,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-02-07 17:12:56,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:56,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:56,128 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-07 17:12:56,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:56,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620561856] [2025-02-07 17:12:56,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620561856] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:12:56,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:12:56,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 17:12:56,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027651477] [2025-02-07 17:12:56,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:12:56,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 17:12:56,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:56,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 17:12:56,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 17:12:56,130 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-07 17:12:56,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:56,151 INFO L93 Difference]: Finished difference Result 112 states and 142 transitions. [2025-02-07 17:12:56,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 17:12:56,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2025-02-07 17:12:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:56,153 INFO L225 Difference]: With dead ends: 112 [2025-02-07 17:12:56,153 INFO L226 Difference]: Without dead ends: 80 [2025-02-07 17:12:56,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 17:12:56,154 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:56,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:12:56,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-07 17:12:56,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2025-02-07 17:12:56,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 65 states have internal predecessors, (82), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-07 17:12:56,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2025-02-07 17:12:56,178 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 49 [2025-02-07 17:12:56,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:56,179 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2025-02-07 17:12:56,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-07 17:12:56,179 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2025-02-07 17:12:56,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-07 17:12:56,181 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:56,181 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:56,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-07 17:12:56,181 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:56,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:56,182 INFO L85 PathProgramCache]: Analyzing trace with hash -399288976, now seen corresponding path program 4 times [2025-02-07 17:12:56,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:56,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720136698] [2025-02-07 17:12:56,182 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:12:56,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:56,191 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 50 statements into 2 equivalence classes. [2025-02-07 17:12:56,200 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 45 of 50 statements. [2025-02-07 17:12:56,202 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-07 17:12:56,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:56,299 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-07 17:12:56,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:56,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720136698] [2025-02-07 17:12:56,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720136698] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:56,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830912713] [2025-02-07 17:12:56,299 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:12:56,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:56,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:56,302 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:56,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-07 17:12:56,344 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 50 statements into 2 equivalence classes. [2025-02-07 17:12:56,367 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 45 of 50 statements. [2025-02-07 17:12:56,367 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-07 17:12:56,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:56,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 17:12:56,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:56,464 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 17:12:56,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:56,542 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-07 17:12:56,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830912713] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:12:56,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:12:56,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-02-07 17:12:56,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237270879] [2025-02-07 17:12:56,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:56,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-07 17:12:56,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:56,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-07 17:12:56,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-02-07 17:12:56,544 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 17:12:56,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:56,679 INFO L93 Difference]: Finished difference Result 220 states and 283 transitions. [2025-02-07 17:12:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 17:12:56,679 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2025-02-07 17:12:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:56,680 INFO L225 Difference]: With dead ends: 220 [2025-02-07 17:12:56,680 INFO L226 Difference]: Without dead ends: 145 [2025-02-07 17:12:56,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-02-07 17:12:56,681 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:56,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 145 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:12:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-02-07 17:12:56,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2025-02-07 17:12:56,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 115 states have (on average 1.2695652173913043) internal successors, (146), 115 states have internal predecessors, (146), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-02-07 17:12:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 180 transitions. [2025-02-07 17:12:56,714 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 180 transitions. Word has length 50 [2025-02-07 17:12:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:56,714 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 180 transitions. [2025-02-07 17:12:56,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 17:12:56,714 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 180 transitions. [2025-02-07 17:12:56,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-07 17:12:56,717 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:56,717 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:56,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-07 17:12:56,918 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,SelfDestructingSolverStorable8 [2025-02-07 17:12:56,918 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:56,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:56,919 INFO L85 PathProgramCache]: Analyzing trace with hash -682206192, now seen corresponding path program 5 times [2025-02-07 17:12:56,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:56,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182629877] [2025-02-07 17:12:56,919 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 17:12:56,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:56,929 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 52 statements into 8 equivalence classes. [2025-02-07 17:12:56,946 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 25 of 52 statements. [2025-02-07 17:12:56,946 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-07 17:12:56,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-07 17:12:57,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:57,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182629877] [2025-02-07 17:12:57,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182629877] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:57,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466668800] [2025-02-07 17:12:57,044 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 17:12:57,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:57,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:57,046 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:57,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-07 17:12:57,094 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 52 statements into 8 equivalence classes. [2025-02-07 17:12:57,129 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 25 of 52 statements. [2025-02-07 17:12:57,129 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-07 17:12:57,129 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:57,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 17:12:57,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-07 17:12:57,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-07 17:12:57,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466668800] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:12:57,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:12:57,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-02-07 17:12:57,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073712139] [2025-02-07 17:12:57,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:57,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-07 17:12:57,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:57,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-07 17:12:57,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2025-02-07 17:12:57,277 INFO L87 Difference]: Start difference. First operand 142 states and 180 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 17:12:57,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:57,603 INFO L93 Difference]: Finished difference Result 267 states and 348 transitions. [2025-02-07 17:12:57,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-07 17:12:57,604 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 52 [2025-02-07 17:12:57,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:57,605 INFO L225 Difference]: With dead ends: 267 [2025-02-07 17:12:57,605 INFO L226 Difference]: Without dead ends: 157 [2025-02-07 17:12:57,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 91 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=607, Unknown=0, NotChecked=0, Total=870 [2025-02-07 17:12:57,606 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 21 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:57,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 245 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 17:12:57,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-02-07 17:12:57,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 135. [2025-02-07 17:12:57,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 114 states have (on average 1.2982456140350878) internal successors, (148), 114 states have internal predecessors, (148), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-07 17:12:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 174 transitions. [2025-02-07 17:12:57,640 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 174 transitions. Word has length 52 [2025-02-07 17:12:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:57,640 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 174 transitions. [2025-02-07 17:12:57,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 17:12:57,640 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 174 transitions. [2025-02-07 17:12:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-07 17:12:57,641 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:57,641 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:57,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-07 17:12:57,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:57,842 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:57,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:57,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2007089784, now seen corresponding path program 6 times [2025-02-07 17:12:57,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:57,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340769266] [2025-02-07 17:12:57,843 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 17:12:57,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:57,851 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 53 statements into 9 equivalence classes. [2025-02-07 17:12:57,865 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 43 of 53 statements. [2025-02-07 17:12:57,869 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-02-07 17:12:57,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-07 17:12:57,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:57,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340769266] [2025-02-07 17:12:57,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340769266] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:57,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411322986] [2025-02-07 17:12:57,958 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 17:12:57,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:57,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:57,961 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:57,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-07 17:12:58,008 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 53 statements into 9 equivalence classes. [2025-02-07 17:12:58,053 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 43 of 53 statements. [2025-02-07 17:12:58,054 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-02-07 17:12:58,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:58,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 17:12:58,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-07 17:12:58,115 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-07 17:12:58,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411322986] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:12:58,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:12:58,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-07 17:12:58,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857431098] [2025-02-07 17:12:58,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:58,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 17:12:58,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:58,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 17:12:58,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2025-02-07 17:12:58,167 INFO L87 Difference]: Start difference. First operand 135 states and 174 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 17:12:58,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:58,300 INFO L93 Difference]: Finished difference Result 170 states and 216 transitions. [2025-02-07 17:12:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-07 17:12:58,300 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2025-02-07 17:12:58,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:58,301 INFO L225 Difference]: With dead ends: 170 [2025-02-07 17:12:58,301 INFO L226 Difference]: Without dead ends: 131 [2025-02-07 17:12:58,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 96 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-02-07 17:12:58,302 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:58,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 228 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:12:58,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-02-07 17:12:58,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2025-02-07 17:12:58,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 110 states have internal predecessors, (137), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-07 17:12:58,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 163 transitions. [2025-02-07 17:12:58,327 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 163 transitions. Word has length 53 [2025-02-07 17:12:58,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:58,327 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 163 transitions. [2025-02-07 17:12:58,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 17:12:58,328 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 163 transitions. [2025-02-07 17:12:58,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-07 17:12:58,328 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:58,328 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:58,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-07 17:12:58,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:58,529 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:58,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:58,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1978853352, now seen corresponding path program 1 times [2025-02-07 17:12:58,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:58,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385510860] [2025-02-07 17:12:58,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:58,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:58,536 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-07 17:12:58,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-07 17:12:58,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:58,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-02-07 17:12:58,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:58,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385510860] [2025-02-07 17:12:58,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385510860] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:58,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901266751] [2025-02-07 17:12:58,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:58,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:58,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:58,611 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:58,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-07 17:12:58,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-07 17:12:58,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-07 17:12:58,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:58,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:58,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-07 17:12:58,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-07 17:12:58,707 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 17:12:58,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901266751] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:12:58,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:12:58,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-07 17:12:58,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484024056] [2025-02-07 17:12:58,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:12:58,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 17:12:58,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:58,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 17:12:58,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-07 17:12:58,709 INFO L87 Difference]: Start difference. First operand 131 states and 163 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:12:58,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:58,750 INFO L93 Difference]: Finished difference Result 228 states and 287 transitions. [2025-02-07 17:12:58,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 17:12:58,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2025-02-07 17:12:58,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:58,753 INFO L225 Difference]: With dead ends: 228 [2025-02-07 17:12:58,753 INFO L226 Difference]: Without dead ends: 143 [2025-02-07 17:12:58,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-07 17:12:58,754 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:58,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 139 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:12:58,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-02-07 17:12:58,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2025-02-07 17:12:58,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 119 states have (on average 1.226890756302521) internal successors, (146), 119 states have internal predecessors, (146), 13 states have call successors, (13), 7 states have call predecessors, (13), 10 states have return successors, (19), 16 states have call predecessors, (19), 13 states have call successors, (19) [2025-02-07 17:12:58,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 178 transitions. [2025-02-07 17:12:58,781 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 178 transitions. Word has length 55 [2025-02-07 17:12:58,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:58,782 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 178 transitions. [2025-02-07 17:12:58,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:12:58,782 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 178 transitions. [2025-02-07 17:12:58,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-07 17:12:58,784 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:58,784 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:58,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-07 17:12:58,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:58,985 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:58,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:58,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1947833545, now seen corresponding path program 1 times [2025-02-07 17:12:58,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:58,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786601330] [2025-02-07 17:12:58,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:58,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:58,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-07 17:12:59,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-07 17:12:59,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:59,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:59,075 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-02-07 17:12:59,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:59,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786601330] [2025-02-07 17:12:59,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786601330] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:12:59,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:12:59,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 17:12:59,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263819050] [2025-02-07 17:12:59,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:12:59,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 17:12:59,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:59,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 17:12:59,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 17:12:59,077 INFO L87 Difference]: Start difference. First operand 143 states and 178 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-07 17:12:59,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:59,128 INFO L93 Difference]: Finished difference Result 233 states and 292 transitions. [2025-02-07 17:12:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 17:12:59,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 55 [2025-02-07 17:12:59,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:59,130 INFO L225 Difference]: With dead ends: 233 [2025-02-07 17:12:59,130 INFO L226 Difference]: Without dead ends: 149 [2025-02-07 17:12:59,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 17:12:59,130 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:59,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 142 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:12:59,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2025-02-07 17:12:59,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2025-02-07 17:12:59,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 122 states have (on average 1.221311475409836) internal successors, (149), 119 states have internal predecessors, (149), 13 states have call successors, (13), 7 states have call predecessors, (13), 10 states have return successors, (19), 19 states have call predecessors, (19), 13 states have call successors, (19) [2025-02-07 17:12:59,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 181 transitions. [2025-02-07 17:12:59,153 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 181 transitions. Word has length 55 [2025-02-07 17:12:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:59,153 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 181 transitions. [2025-02-07 17:12:59,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-07 17:12:59,153 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 181 transitions. [2025-02-07 17:12:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-07 17:12:59,154 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:59,154 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:59,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-07 17:12:59,154 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:59,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:59,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1502661880, now seen corresponding path program 1 times [2025-02-07 17:12:59,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:59,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387415500] [2025-02-07 17:12:59,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:59,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:59,161 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-07 17:12:59,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-07 17:12:59,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:59,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-07 17:12:59,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:59,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387415500] [2025-02-07 17:12:59,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387415500] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:59,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640906841] [2025-02-07 17:12:59,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:59,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:59,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:59,418 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:59,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-07 17:12:59,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-07 17:12:59,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-07 17:12:59,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:59,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:59,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-07 17:12:59,494 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-07 17:12:59,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-07 17:12:59,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640906841] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:12:59,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:12:59,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 23 [2025-02-07 17:12:59,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673914995] [2025-02-07 17:12:59,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:59,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-07 17:12:59,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:59,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-07 17:12:59,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2025-02-07 17:12:59,849 INFO L87 Difference]: Start difference. First operand 146 states and 181 transitions. Second operand has 23 states, 20 states have (on average 2.85) internal successors, (57), 21 states have internal predecessors, (57), 6 states have call successors, (12), 4 states have call predecessors, (12), 9 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2025-02-07 17:13:00,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:00,225 INFO L93 Difference]: Finished difference Result 202 states and 236 transitions. [2025-02-07 17:13:00,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-07 17:13:00,225 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.85) internal successors, (57), 21 states have internal predecessors, (57), 6 states have call successors, (12), 4 states have call predecessors, (12), 9 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) Word has length 55 [2025-02-07 17:13:00,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:00,226 INFO L225 Difference]: With dead ends: 202 [2025-02-07 17:13:00,226 INFO L226 Difference]: Without dead ends: 145 [2025-02-07 17:13:00,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 95 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2025-02-07 17:13:00,227 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 52 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:00,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 308 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 17:13:00,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-02-07 17:13:00,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 136. [2025-02-07 17:13:00,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 114 states have internal predecessors, (135), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2025-02-07 17:13:00,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 161 transitions. [2025-02-07 17:13:00,251 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 161 transitions. Word has length 55 [2025-02-07 17:13:00,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:00,252 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 161 transitions. [2025-02-07 17:13:00,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.85) internal successors, (57), 21 states have internal predecessors, (57), 6 states have call successors, (12), 4 states have call predecessors, (12), 9 states have return successors, (12), 4 states have call predecessors, (12), 6 states have call successors, (12) [2025-02-07 17:13:00,252 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 161 transitions. [2025-02-07 17:13:00,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-07 17:13:00,253 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:00,253 INFO L218 NwaCegarLoop]: trace histogram [8, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:13:00,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-07 17:13:00,453 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,SelfDestructingSolverStorable13 [2025-02-07 17:13:00,454 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:00,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:00,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1114638044, now seen corresponding path program 7 times [2025-02-07 17:13:00,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:00,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520843983] [2025-02-07 17:13:00,454 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 17:13:00,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:00,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-07 17:13:00,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-07 17:13:00,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:00,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-07 17:13:00,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:00,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520843983] [2025-02-07 17:13:00,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520843983] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:13:00,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180920378] [2025-02-07 17:13:00,581 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 17:13:00,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:00,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:00,583 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:13:00,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-07 17:13:00,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-07 17:13:00,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-07 17:13:00,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:00,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:00,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 17:13:00,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 27 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-07 17:13:00,719 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:13:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-07 17:13:00,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180920378] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:13:00,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:13:00,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-02-07 17:13:00,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807032106] [2025-02-07 17:13:00,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:13:00,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-07 17:13:00,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:00,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-07 17:13:00,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-02-07 17:13:00,789 INFO L87 Difference]: Start difference. First operand 136 states and 161 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 17:13:01,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:01,009 INFO L93 Difference]: Finished difference Result 169 states and 194 transitions. [2025-02-07 17:13:01,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-07 17:13:01,010 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2025-02-07 17:13:01,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:01,011 INFO L225 Difference]: With dead ends: 169 [2025-02-07 17:13:01,011 INFO L226 Difference]: Without dead ends: 132 [2025-02-07 17:13:01,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 99 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2025-02-07 17:13:01,012 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 33 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:01,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 346 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 17:13:01,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-02-07 17:13:01,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2025-02-07 17:13:01,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 109 states have (on average 1.165137614678899) internal successors, (127), 108 states have internal predecessors, (127), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (13), 13 states have call predecessors, (13), 11 states have call successors, (13) [2025-02-07 17:13:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2025-02-07 17:13:01,037 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 55 [2025-02-07 17:13:01,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:01,037 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2025-02-07 17:13:01,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 17:13:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2025-02-07 17:13:01,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-07 17:13:01,038 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:01,038 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:13:01,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-07 17:13:01,239 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,SelfDestructingSolverStorable14 [2025-02-07 17:13:01,239 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:01,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:01,239 INFO L85 PathProgramCache]: Analyzing trace with hash 419648133, now seen corresponding path program 8 times [2025-02-07 17:13:01,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:01,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763365240] [2025-02-07 17:13:01,240 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:13:01,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:01,250 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 63 statements into 2 equivalence classes. [2025-02-07 17:13:01,278 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 63 of 63 statements. [2025-02-07 17:13:01,278 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:13:01,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 17:13:01,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036604603] [2025-02-07 17:13:01,280 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:13:01,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:01,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:01,283 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:13:01,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-07 17:13:01,354 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 63 statements into 2 equivalence classes. [2025-02-07 17:13:01,787 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 63 of 63 statements. [2025-02-07 17:13:01,787 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:13:01,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:01,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 129 conjuncts are in the unsatisfiable core [2025-02-07 17:13:01,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:01,872 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 [2025-02-07 17:13:01,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 17:13:01,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:01,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2025-02-07 17:13:02,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:02,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2025-02-07 17:13:02,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:02,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 54 [2025-02-07 17:13:02,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:02,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2025-02-07 17:13:02,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:02,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 80 [2025-02-07 17:13:02,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:02,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 77 treesize of output 94 [2025-02-07 17:13:02,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:02,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:02,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 88 treesize of output 108 [2025-02-07 17:13:04,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:04,743 INFO L349 Elim1Store]: treesize reduction 386, result has 32.6 percent of original size [2025-02-07 17:13:04,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 18 select indices, 18 select index equivalence classes, 39 disjoint index pairs (out of 153 index pairs), introduced 18 new quantified variables, introduced 165 case distinctions, treesize of input 186 treesize of output 318 [2025-02-07 17:13:10,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:10,499 INFO L349 Elim1Store]: treesize reduction 80, result has 75.2 percent of original size [2025-02-07 17:13:10,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 36 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 410 treesize of output 399 [2025-02-07 17:13:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 8 proven. 144 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:13:19,170 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:13:23,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:23,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763365240] [2025-02-07 17:13:23,458 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 17:13:23,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036604603] [2025-02-07 17:13:23,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036604603] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:13:23,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:13:23,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2025-02-07 17:13:23,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608876748] [2025-02-07 17:13:23,458 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-07 17:13:23,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-07 17:13:23,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:23,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-07 17:13:23,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=4612, Unknown=0, NotChecked=0, Total=5112 [2025-02-07 17:13:23,460 INFO L87 Difference]: Start difference. First operand 129 states and 151 transitions. Second operand has 46 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 41 states have internal predecessors, (52), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-07 17:13:26,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:26,530 INFO L93 Difference]: Finished difference Result 201 states and 244 transitions. [2025-02-07 17:13:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-02-07 17:13:26,531 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 41 states have internal predecessors, (52), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 63 [2025-02-07 17:13:26,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:26,532 INFO L225 Difference]: With dead ends: 201 [2025-02-07 17:13:26,532 INFO L226 Difference]: Without dead ends: 198 [2025-02-07 17:13:26,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2408 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=553, Invalid=5147, Unknown=0, NotChecked=0, Total=5700 [2025-02-07 17:13:26,534 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 72 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 2421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:26,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 783 Invalid, 2421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2405 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-02-07 17:13:26,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-02-07 17:13:26,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 167. [2025-02-07 17:13:26,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 140 states have (on average 1.1714285714285715) internal successors, (164), 140 states have internal predecessors, (164), 15 states have call successors, (15), 9 states have call predecessors, (15), 11 states have return successors, (19), 17 states have call predecessors, (19), 15 states have call successors, (19) [2025-02-07 17:13:26,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 198 transitions. [2025-02-07 17:13:26,572 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 198 transitions. Word has length 63 [2025-02-07 17:13:26,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:26,572 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 198 transitions. [2025-02-07 17:13:26,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 41 states have internal predecessors, (52), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-07 17:13:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 198 transitions. [2025-02-07 17:13:26,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-07 17:13:26,573 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:26,574 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:13:26,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-07 17:13:26,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:26,774 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:26,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:26,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1381262150, now seen corresponding path program 1 times [2025-02-07 17:13:26,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:26,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465637524] [2025-02-07 17:13:26,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:26,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:26,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-07 17:13:26,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-07 17:13:26,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:26,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-02-07 17:13:26,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:26,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465637524] [2025-02-07 17:13:26,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465637524] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:13:26,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:13:26,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 17:13:26,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900655477] [2025-02-07 17:13:26,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:13:26,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 17:13:26,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:26,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 17:13:26,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 17:13:26,862 INFO L87 Difference]: Start difference. First operand 167 states and 198 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-07 17:13:26,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:26,916 INFO L93 Difference]: Finished difference Result 218 states and 261 transitions. [2025-02-07 17:13:26,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 17:13:26,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2025-02-07 17:13:26,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:26,918 INFO L225 Difference]: With dead ends: 218 [2025-02-07 17:13:26,918 INFO L226 Difference]: Without dead ends: 167 [2025-02-07 17:13:26,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 17:13:26,919 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:26,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:13:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2025-02-07 17:13:26,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2025-02-07 17:13:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 140 states have (on average 1.1571428571428573) internal successors, (162), 140 states have internal predecessors, (162), 15 states have call successors, (15), 9 states have call predecessors, (15), 11 states have return successors, (19), 17 states have call predecessors, (19), 15 states have call successors, (19) [2025-02-07 17:13:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 196 transitions. [2025-02-07 17:13:26,963 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 196 transitions. Word has length 63 [2025-02-07 17:13:26,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:26,964 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 196 transitions. [2025-02-07 17:13:26,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-07 17:13:26,964 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 196 transitions. [2025-02-07 17:13:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-07 17:13:26,965 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:26,965 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:13:26,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-07 17:13:26,965 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:26,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:26,965 INFO L85 PathProgramCache]: Analyzing trace with hash 125145509, now seen corresponding path program 9 times [2025-02-07 17:13:26,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:26,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729601047] [2025-02-07 17:13:26,966 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:13:26,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:26,976 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 11 equivalence classes. [2025-02-07 17:13:26,998 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 50 of 64 statements. [2025-02-07 17:13:26,999 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-07 17:13:26,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 28 proven. 49 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-02-07 17:13:27,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:27,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729601047] [2025-02-07 17:13:27,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729601047] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:13:27,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971289999] [2025-02-07 17:13:27,117 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:13:27,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:27,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:27,119 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:13:27,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-07 17:13:27,191 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 11 equivalence classes. [2025-02-07 17:13:27,338 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 50 of 64 statements. [2025-02-07 17:13:27,339 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-07 17:13:27,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:27,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-07 17:13:27,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:27,416 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 39 proven. 38 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-02-07 17:13:27,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:13:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 23 proven. 54 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-02-07 17:13:27,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971289999] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:13:27,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:13:27,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-02-07 17:13:27,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224221766] [2025-02-07 17:13:27,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:13:27,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-07 17:13:27,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:27,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-07 17:13:27,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-02-07 17:13:27,491 INFO L87 Difference]: Start difference. First operand 167 states and 196 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-07 17:13:27,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:27,726 INFO L93 Difference]: Finished difference Result 358 states and 434 transitions. [2025-02-07 17:13:27,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-07 17:13:27,726 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), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 64 [2025-02-07 17:13:27,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:27,728 INFO L225 Difference]: With dead ends: 358 [2025-02-07 17:13:27,728 INFO L226 Difference]: Without dead ends: 257 [2025-02-07 17:13:27,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 118 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2025-02-07 17:13:27,729 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 30 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:27,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 211 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:13:27,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2025-02-07 17:13:27,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 244. [2025-02-07 17:13:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 203 states have (on average 1.1625615763546797) internal successors, (236), 203 states have internal predecessors, (236), 23 states have call successors, (23), 13 states have call predecessors, (23), 17 states have return successors, (31), 27 states have call predecessors, (31), 23 states have call successors, (31) [2025-02-07 17:13:27,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 290 transitions. [2025-02-07 17:13:27,816 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 290 transitions. Word has length 64 [2025-02-07 17:13:27,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:27,817 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 290 transitions. [2025-02-07 17:13:27,817 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), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-02-07 17:13:27,817 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 290 transitions. [2025-02-07 17:13:27,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-07 17:13:27,818 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:27,818 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:13:27,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-07 17:13:28,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-07 17:13:28,019 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:28,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:28,019 INFO L85 PathProgramCache]: Analyzing trace with hash 462516569, now seen corresponding path program 1 times [2025-02-07 17:13:28,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:28,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107982346] [2025-02-07 17:13:28,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:28,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:28,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-07 17:13:28,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-07 17:13:28,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:28,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 17:13:28,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14708686] [2025-02-07 17:13:28,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:28,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:28,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:28,051 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) [2025-02-07 17:13:28,054 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 [2025-02-07 17:13:28,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-07 17:13:28,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-07 17:13:28,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:28,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:28,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-02-07 17:13:28,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:28,506 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 [2025-02-07 17:13:28,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 17:13:28,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:28,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:28,600 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:28,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2025-02-07 17:13:28,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:28,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:28,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:28,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:28,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:28,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2025-02-07 17:13:28,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:28,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:28,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:28,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:29,022 INFO L349 Elim1Store]: treesize reduction 72, result has 48.9 percent of original size [2025-02-07 17:13:29,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 96 [2025-02-07 17:13:44,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:44,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:44,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:44,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:44,404 INFO L349 Elim1Store]: treesize reduction 473, result has 26.3 percent of original size [2025-02-07 17:13:44,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 218 treesize of output 240 [2025-02-07 17:14:04,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:14:04,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:14:04,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:14:04,168 INFO L190 IndexEqualityManager]: detected not equals via solver