./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array22_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/array22_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 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 17:12:54,967 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 17:12:55,033 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 17:12:55,040 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 17:12:55,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 17:12:55,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 17:12:55,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 17:12:55,069 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 17:12:55,070 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 17:12:55,070 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 17:12:55,071 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 17:12:55,071 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 17:12:55,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 17:12:55,072 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 17:12:55,072 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 17:12:55,072 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 17:12:55,072 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 17:12:55,073 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 17:12:55,073 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 17:12:55,073 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 17:12:55,073 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 17:12:55,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 17:12:55,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 17:12:55,073 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 17:12:55,073 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 17:12:55,073 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 17:12:55,073 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 17:12:55,074 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 17:12:55,074 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 17:12:55,074 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 17:12:55,074 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 17:12:55,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 17:12:55,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 17:12:55,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 17:12:55,075 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 17:12:55,075 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 17:12:55,075 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 17:12:55,075 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 17:12:55,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 17:12:55,075 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 17:12:55,076 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 17:12:55,076 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 17:12:55,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 17:12:55,076 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 -> 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b [2025-02-07 17:12:55,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 17:12:55,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 17:12:55,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 17:12:55,383 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 17:12:55,383 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 17:12:55,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array22_pattern.c [2025-02-07 17:12:56,648 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b8badef30/a9f87bdbde854ab191c6b47cdfcfac53/FLAG9ec598de6 [2025-02-07 17:12:56,875 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 17:12:56,877 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-patterns/array22_pattern.c [2025-02-07 17:12:56,886 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b8badef30/a9f87bdbde854ab191c6b47cdfcfac53/FLAG9ec598de6 [2025-02-07 17:12:57,207 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b8badef30/a9f87bdbde854ab191c6b47cdfcfac53 [2025-02-07 17:12:57,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 17:12:57,210 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 17:12:57,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 17:12:57,211 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 17:12:57,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 17:12:57,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 05:12:57" (1/1) ... [2025-02-07 17:12:57,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea01bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57, skipping insertion in model container [2025-02-07 17:12:57,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 05:12:57" (1/1) ... [2025-02-07 17:12:57,231 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 17:12:57,344 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/array22_pattern.c[1347,1360] [2025-02-07 17:12:57,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 17:12:57,376 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 17:12:57,385 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/array22_pattern.c[1347,1360] [2025-02-07 17:12:57,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 17:12:57,414 INFO L204 MainTranslator]: Completed translation [2025-02-07 17:12:57,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57 WrapperNode [2025-02-07 17:12:57,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 17:12:57,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 17:12:57,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 17:12:57,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 17:12:57,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57" (1/1) ... [2025-02-07 17:12:57,425 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57" (1/1) ... [2025-02-07 17:12:57,438 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2025-02-07 17:12:57,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 17:12:57,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 17:12:57,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 17:12:57,439 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 17:12:57,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57" (1/1) ... [2025-02-07 17:12:57,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57" (1/1) ... [2025-02-07 17:12:57,447 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57" (1/1) ... [2025-02-07 17:12:57,457 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-02-07 17:12:57,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57" (1/1) ... [2025-02-07 17:12:57,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57" (1/1) ... [2025-02-07 17:12:57,462 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57" (1/1) ... [2025-02-07 17:12:57,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57" (1/1) ... [2025-02-07 17:12:57,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57" (1/1) ... [2025-02-07 17:12:57,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57" (1/1) ... [2025-02-07 17:12:57,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 17:12:57,466 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 17:12:57,466 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 17:12:57,467 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 17:12:57,467 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57" (1/1) ... [2025-02-07 17:12:57,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 17:12:57,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:57,498 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 17:12:57,501 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 17:12:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2025-02-07 17:12:57,524 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2025-02-07 17:12:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 17:12:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-07 17:12:57,524 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-07 17:12:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 17:12:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 17:12:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 17:12:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 17:12:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 17:12:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 17:12:57,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 17:12:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 17:12:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 17:12:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 17:12:57,602 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 17:12:57,603 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 17:12:57,808 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 17:12:57,836 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2025-02-07 17:12:57,837 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 17:12:57,847 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 17:12:57,847 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 17:12:57,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:12:57 BoogieIcfgContainer [2025-02-07 17:12:57,848 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 17:12:57,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 17:12:57,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 17:12:57,856 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 17:12:57,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 05:12:57" (1/3) ... [2025-02-07 17:12:57,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58713a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 05:12:57, skipping insertion in model container [2025-02-07 17:12:57,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:12:57" (2/3) ... [2025-02-07 17:12:57,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58713a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 05:12:57, skipping insertion in model container [2025-02-07 17:12:57,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:12:57" (3/3) ... [2025-02-07 17:12:57,859 INFO L128 eAbstractionObserver]: Analyzing ICFG array22_pattern.c [2025-02-07 17:12:57,872 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 17:12:57,874 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array22_pattern.c that has 3 procedures, 35 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-02-07 17:12:57,922 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 17:12:57,931 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;@39f582fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 17:12:57,931 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 17:12:57,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 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 17:12:57,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-07 17:12:57,938 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:57,938 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:57,938 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:57,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:57,942 INFO L85 PathProgramCache]: Analyzing trace with hash 998907557, now seen corresponding path program 1 times [2025-02-07 17:12:57,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:57,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796460064] [2025-02-07 17:12:57,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:57,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:58,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-07 17:12:58,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-07 17:12:58,020 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:58,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:58,068 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 17:12:58,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:58,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796460064] [2025-02-07 17:12:58,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796460064] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:12:58,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:12:58,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 17:12:58,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043790053] [2025-02-07 17:12:58,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:12:58,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 17:12:58,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:58,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 17:12:58,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 17:12:58,094 INFO L87 Difference]: Start difference. First operand has 35 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 27 states have internal predecessors, (38), 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 17:12:58,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:58,113 INFO L93 Difference]: Finished difference Result 68 states and 96 transitions. [2025-02-07 17:12:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 17:12:58,116 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 17:12:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:58,121 INFO L225 Difference]: With dead ends: 68 [2025-02-07 17:12:58,122 INFO L226 Difference]: Without dead ends: 31 [2025-02-07 17:12:58,125 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 17:12:58,127 INFO L435 NwaCegarLoop]: 45 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, 45 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 17:12:58,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:12:58,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-02-07 17:12:58,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2025-02-07 17:12:58,157 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 17:12:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2025-02-07 17:12:58,164 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 13 [2025-02-07 17:12:58,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:58,165 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2025-02-07 17:12:58,166 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 17:12:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2025-02-07 17:12:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-07 17:12:58,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:58,169 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2025-02-07 17:12:58,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 17:12:58,170 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:58,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:58,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1317754935, now seen corresponding path program 1 times [2025-02-07 17:12:58,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:58,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987682499] [2025-02-07 17:12:58,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:58,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:58,192 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-07 17:12:58,231 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-07 17:12:58,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:58,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 17:12:58,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:58,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987682499] [2025-02-07 17:12:58,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987682499] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:12:58,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:12:58,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 17:12:58,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347536656] [2025-02-07 17:12:58,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:12:58,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 17:12:58,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:58,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 17:12:58,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:12:58,528 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:12:58,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:58,562 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2025-02-07 17:12:58,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 17:12:58,563 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2025-02-07 17:12:58,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:58,563 INFO L225 Difference]: With dead ends: 36 [2025-02-07 17:12:58,563 INFO L226 Difference]: Without dead ends: 33 [2025-02-07 17:12:58,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:12:58,564 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 94 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 17:12:58,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 94 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:12:58,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-02-07 17:12:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2025-02-07 17:12:58,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 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 17:12:58,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2025-02-07 17:12:58,576 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 40 [2025-02-07 17:12:58,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:58,577 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2025-02-07 17:12:58,578 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, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:12:58,578 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2025-02-07 17:12:58,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-07 17:12:58,579 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:58,579 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1] [2025-02-07 17:12:58,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 17:12:58,579 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:58,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:58,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1146470593, now seen corresponding path program 1 times [2025-02-07 17:12:58,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:58,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104727651] [2025-02-07 17:12:58,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:58,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:58,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-07 17:12:58,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-07 17:12:58,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:58,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-07 17:12:58,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:58,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104727651] [2025-02-07 17:12:58,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104727651] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:12:58,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:12:58,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 17:12:58,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683040530] [2025-02-07 17:12:58,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:12:58,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 17:12:58,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:58,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 17:12:58,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-07 17:12:58,790 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:12:58,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:58,902 INFO L93 Difference]: Finished difference Result 67 states and 90 transitions. [2025-02-07 17:12:58,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 17:12:58,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2025-02-07 17:12:58,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:58,904 INFO L225 Difference]: With dead ends: 67 [2025-02-07 17:12:58,905 INFO L226 Difference]: Without dead ends: 38 [2025-02-07 17:12:58,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-07 17:12:58,906 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 18 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:58,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 74 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:12:58,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-02-07 17:12:58,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2025-02-07 17:12:58,916 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 17:12:58,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2025-02-07 17:12:58,917 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 43 [2025-02-07 17:12:58,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:58,918 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2025-02-07 17:12:58,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:12:58,918 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2025-02-07 17:12:58,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-07 17:12:58,919 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:58,919 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1] [2025-02-07 17:12:58,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-07 17:12:58,919 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:58,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:58,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2056326493, now seen corresponding path program 1 times [2025-02-07 17:12:58,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:58,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018443282] [2025-02-07 17:12:58,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:58,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:58,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-07 17:12:58,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-07 17:12:58,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:58,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-07 17:12:59,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:59,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018443282] [2025-02-07 17:12:59,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018443282] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:12:59,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:12:59,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 17:12:59,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241425861] [2025-02-07 17:12:59,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:12:59,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 17:12:59,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:59,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 17:12:59,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:12:59,054 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:12:59,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:59,102 INFO L93 Difference]: Finished difference Result 67 states and 91 transitions. [2025-02-07 17:12:59,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 17:12:59,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2025-02-07 17:12:59,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:59,103 INFO L225 Difference]: With dead ends: 67 [2025-02-07 17:12:59,103 INFO L226 Difference]: Without dead ends: 37 [2025-02-07 17:12:59,103 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 17:12:59,104 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:59,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:12:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-07 17:12:59,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2025-02-07 17:12:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 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 17:12:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2025-02-07 17:12:59,114 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 45 [2025-02-07 17:12:59,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:59,114 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2025-02-07 17:12:59,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:12:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2025-02-07 17:12:59,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-07 17:12:59,116 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:59,116 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1] [2025-02-07 17:12:59,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-07 17:12:59,117 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:59,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:59,117 INFO L85 PathProgramCache]: Analyzing trace with hash 986832423, now seen corresponding path program 1 times [2025-02-07 17:12:59,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:59,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445965916] [2025-02-07 17:12:59,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:59,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:59,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-07 17:12:59,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-07 17:12:59,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:59,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 17:12:59,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:59,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445965916] [2025-02-07 17:12:59,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445965916] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:59,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101982787] [2025-02-07 17:12:59,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:12:59,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:59,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:59,338 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 17:12:59,340 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 17:12:59,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-07 17:12:59,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-07 17:12:59,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:12:59,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:59,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 17:12:59,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-07 17:12:59,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 17:12:59,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101982787] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:12:59,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:12:59,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-02-07 17:12:59,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719240027] [2025-02-07 17:12:59,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:59,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-07 17:12:59,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:59,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-07 17:12:59,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2025-02-07 17:12:59,653 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-07 17:12:59,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:59,800 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2025-02-07 17:12:59,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 17:12:59,801 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 46 [2025-02-07 17:12:59,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:59,802 INFO L225 Difference]: With dead ends: 73 [2025-02-07 17:12:59,802 INFO L226 Difference]: Without dead ends: 43 [2025-02-07 17:12:59,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2025-02-07 17:12:59,804 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 37 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:59,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 77 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:12:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-02-07 17:12:59,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2025-02-07 17:12:59,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 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 17:12:59,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2025-02-07 17:12:59,818 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 46 [2025-02-07 17:12:59,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:59,818 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2025-02-07 17:12:59,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-07 17:12:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2025-02-07 17:12:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-07 17:12:59,820 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:59,820 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1] [2025-02-07 17:12:59,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 17:13:00,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:00,021 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:00,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:00,022 INFO L85 PathProgramCache]: Analyzing trace with hash -758628211, now seen corresponding path program 2 times [2025-02-07 17:13:00,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:00,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101568597] [2025-02-07 17:13:00,022 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:13:00,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:00,041 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-02-07 17:13:00,054 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-02-07 17:13:00,055 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:13:00,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-07 17:13:00,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:00,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101568597] [2025-02-07 17:13:00,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101568597] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:13:00,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866091051] [2025-02-07 17:13:00,194 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:13:00,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:00,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:00,197 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 17:13:00,198 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 17:13:00,249 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-02-07 17:13:00,277 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-02-07 17:13:00,277 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:13:00,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:00,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 17:13:00,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 17:13:00,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:13:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-07 17:13:00,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866091051] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:13:00,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:13:00,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-02-07 17:13:00,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898801369] [2025-02-07 17:13:00,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:13:00,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-07 17:13:00,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:00,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-07 17:13:00,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-02-07 17:13:00,459 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-02-07 17:13:00,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:00,687 INFO L93 Difference]: Finished difference Result 84 states and 106 transitions. [2025-02-07 17:13:00,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 17:13:00,688 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 48 [2025-02-07 17:13:00,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:00,689 INFO L225 Difference]: With dead ends: 84 [2025-02-07 17:13:00,691 INFO L226 Difference]: Without dead ends: 55 [2025-02-07 17:13:00,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2025-02-07 17:13:00,692 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 36 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:00,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 165 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 17:13:00,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-07 17:13:00,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2025-02-07 17:13:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.25) internal successors, (50), 40 states have internal predecessors, (50), 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 17:13:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2025-02-07 17:13:00,707 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 48 [2025-02-07 17:13:00,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:00,707 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2025-02-07 17:13:00,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2025-02-07 17:13:00,707 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2025-02-07 17:13:00,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-07 17:13:00,710 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:00,710 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, 1] [2025-02-07 17:13:00,718 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 17:13:00,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:00,911 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:00,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1934120273, now seen corresponding path program 3 times [2025-02-07 17:13:00,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:00,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278901123] [2025-02-07 17:13:00,912 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:13:00,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:00,925 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 7 equivalence classes. [2025-02-07 17:13:00,972 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:13:00,975 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-07 17:13:00,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 17:13:00,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228315687] [2025-02-07 17:13:00,978 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:13:00,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:00,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:00,980 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 17:13:00,982 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 17:13:01,046 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 56 statements into 7 equivalence classes. [2025-02-07 17:13:01,581 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:13:01,581 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-07 17:13:01,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:01,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 99 conjuncts are in the unsatisfiable core [2025-02-07 17:13:01,593 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:01,720 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 17:13:01,775 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 17:13:01,951 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2025-02-07 17:13:01,951 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 17:13:02,059 INFO L349 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2025-02-07 17:13:02,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 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 17:13:03,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:03,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:03,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:03,580 INFO L349 Elim1Store]: treesize reduction 266, result has 30.9 percent of original size [2025-02-07 17:13:03,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 5 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 88 treesize of output 158 [2025-02-07 17:13:07,610 INFO L349 Elim1Store]: treesize reduction 192, result has 34.9 percent of original size [2025-02-07 17:13:07,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 473 treesize of output 505 [2025-02-07 17:13:12,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:12,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:12,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:12,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:12,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:12,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:12,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:12,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:12,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:12,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:12,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:12,992 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-07 17:13:13,153 INFO L349 Elim1Store]: treesize reduction 370, result has 5.6 percent of original size [2025-02-07 17:13:13,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 18 case distinctions, treesize of input 703 treesize of output 900 [2025-02-07 17:13:14,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,308 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-07 17:13:14,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 60 treesize of output 65 [2025-02-07 17:13:14,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,331 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-07 17:13:14,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,397 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-07 17:13:14,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:14,798 INFO L349 Elim1Store]: treesize reduction 775, result has 7.5 percent of original size [2025-02-07 17:13:14,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 7 select indices, 7 select index equivalence classes, 18 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 23 case distinctions, treesize of input 384 treesize of output 666 [2025-02-07 17:13:15,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:15,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:15,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:15,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:15,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:15,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:15,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:15,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:15,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:15,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:15,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:15,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:15,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:15,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:15,780 INFO L349 Elim1Store]: treesize reduction 162, result has 32.8 percent of original size [2025-02-07 17:13:15,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 204 treesize of output 196 [2025-02-07 17:13:18,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 261 treesize of output 213 [2025-02-07 17:13:19,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:19,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:19,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:19,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:19,067 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2025-02-07 17:13:19,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 90 treesize of output 1 [2025-02-07 17:13:19,078 INFO L349 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2025-02-07 17:13:19,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 1 [2025-02-07 17:13:19,220 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 17:13:19,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:13:21,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:21,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278901123] [2025-02-07 17:13:21,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 17:13:21,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228315687] [2025-02-07 17:13:21,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228315687] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:13:21,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:13:21,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2025-02-07 17:13:21,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536382209] [2025-02-07 17:13:21,577 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-07 17:13:21,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-02-07 17:13:21,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:21,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-02-07 17:13:21,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=2791, Unknown=0, NotChecked=0, Total=3080 [2025-02-07 17:13:21,580 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 37 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 34 states have internal predecessors, (46), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-07 17:13:27,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-07 17:13:31,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-07 17:13:32,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:32,895 INFO L93 Difference]: Finished difference Result 116 states and 144 transitions. [2025-02-07 17:13:32,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-07 17:13:32,896 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 34 states have internal predecessors, (46), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 56 [2025-02-07 17:13:32,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:32,898 INFO L225 Difference]: With dead ends: 116 [2025-02-07 17:13:32,898 INFO L226 Difference]: Without dead ends: 107 [2025-02-07 17:13:32,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1508 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=328, Invalid=3332, Unknown=0, NotChecked=0, Total=3660 [2025-02-07 17:13:32,900 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 67 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:32,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 494 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1267 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2025-02-07 17:13:32,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-02-07 17:13:32,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 90. [2025-02-07 17:13:32,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.25) internal successors, (90), 73 states have internal predecessors, (90), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2025-02-07 17:13:32,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2025-02-07 17:13:32,928 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 56 [2025-02-07 17:13:32,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:32,928 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2025-02-07 17:13:32,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 34 states have internal predecessors, (46), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-07 17:13:32,928 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2025-02-07 17:13:32,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-07 17:13:32,929 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:32,929 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, 1] [2025-02-07 17:13:32,940 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 17:13:33,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:33,130 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:33,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:33,131 INFO L85 PathProgramCache]: Analyzing trace with hash -853295214, now seen corresponding path program 1 times [2025-02-07 17:13:33,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:33,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555813520] [2025-02-07 17:13:33,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:33,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:33,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-07 17:13:33,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:13:33,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:33,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:33,236 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 17:13:33,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:33,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555813520] [2025-02-07 17:13:33,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555813520] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:13:33,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:13:33,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 17:13:33,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293347684] [2025-02-07 17:13:33,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:13:33,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 17:13:33,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:33,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 17:13:33,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:13:33,241 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 17:13:33,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:33,271 INFO L93 Difference]: Finished difference Result 129 states and 158 transitions. [2025-02-07 17:13:33,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 17:13:33,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 56 [2025-02-07 17:13:33,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:33,273 INFO L225 Difference]: With dead ends: 129 [2025-02-07 17:13:33,273 INFO L226 Difference]: Without dead ends: 96 [2025-02-07 17:13:33,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:13:33,274 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:33,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:13:33,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-02-07 17:13:33,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2025-02-07 17:13:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 76 states have internal predecessors, (92), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-07 17:13:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2025-02-07 17:13:33,304 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 56 [2025-02-07 17:13:33,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:33,305 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2025-02-07 17:13:33,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 17:13:33,305 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2025-02-07 17:13:33,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-07 17:13:33,306 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:33,306 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, 1] [2025-02-07 17:13:33,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-07 17:13:33,306 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:33,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:33,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1089648402, now seen corresponding path program 1 times [2025-02-07 17:13:33,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:33,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795826822] [2025-02-07 17:13:33,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:33,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:33,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-07 17:13:33,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:13:33,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:33,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:33,375 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 17:13:33,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:33,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795826822] [2025-02-07 17:13:33,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795826822] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:13:33,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:13:33,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 17:13:33,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370101827] [2025-02-07 17:13:33,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:13:33,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 17:13:33,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:33,378 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 17:13:33,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:13:33,378 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 17:13:33,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:33,418 INFO L93 Difference]: Finished difference Result 133 states and 161 transitions. [2025-02-07 17:13:33,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 17:13:33,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 56 [2025-02-07 17:13:33,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:33,421 INFO L225 Difference]: With dead ends: 133 [2025-02-07 17:13:33,422 INFO L226 Difference]: Without dead ends: 96 [2025-02-07 17:13:33,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:13:33,423 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:33,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:13:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-02-07 17:13:33,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2025-02-07 17:13:33,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 75 states have (on average 1.2133333333333334) internal successors, (91), 76 states have internal predecessors, (91), 9 states have call successors, (9), 7 states have call predecessors, (9), 9 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2025-02-07 17:13:33,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 112 transitions. [2025-02-07 17:13:33,453 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 112 transitions. Word has length 56 [2025-02-07 17:13:33,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:33,453 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 112 transitions. [2025-02-07 17:13:33,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 17:13:33,453 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 112 transitions. [2025-02-07 17:13:33,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-07 17:13:33,456 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:33,456 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, 1] [2025-02-07 17:13:33,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-07 17:13:33,456 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:33,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:33,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1697767085, now seen corresponding path program 1 times [2025-02-07 17:13:33,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:33,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126133224] [2025-02-07 17:13:33,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:33,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:33,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-07 17:13:33,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:13:33,483 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:33,483 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:33,742 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-02-07 17:13:33,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126133224] [2025-02-07 17:13:33,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126133224] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:13:33,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371058520] [2025-02-07 17:13:33,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:33,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:33,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:33,745 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 17:13:33,764 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 17:13:33,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-07 17:13:33,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:13:33,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:33,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:33,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-07 17:13:33,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 17:13:33,988 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:13:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-02-07 17:13:34,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371058520] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:13:34,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:13:34,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 16 [2025-02-07 17:13:34,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137562637] [2025-02-07 17:13:34,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:13:34,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-07 17:13:34,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:34,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-07 17:13:34,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2025-02-07 17:13:34,088 INFO L87 Difference]: Start difference. First operand 94 states and 112 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2025-02-07 17:13:34,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:34,262 INFO L93 Difference]: Finished difference Result 149 states and 182 transitions. [2025-02-07 17:13:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 17:13:34,263 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 56 [2025-02-07 17:13:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:34,264 INFO L225 Difference]: With dead ends: 149 [2025-02-07 17:13:34,264 INFO L226 Difference]: Without dead ends: 110 [2025-02-07 17:13:34,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2025-02-07 17:13:34,265 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 30 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:34,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 153 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:13:34,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-02-07 17:13:34,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2025-02-07 17:13:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 86 states have (on average 1.2093023255813953) internal successors, (104), 86 states have internal predecessors, (104), 11 states have call successors, (11), 9 states have call predecessors, (11), 10 states have return successors, (15), 12 states have call predecessors, (15), 11 states have call successors, (15) [2025-02-07 17:13:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 130 transitions. [2025-02-07 17:13:34,290 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 130 transitions. Word has length 56 [2025-02-07 17:13:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:34,290 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 130 transitions. [2025-02-07 17:13:34,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 4 states have call successors, (11), 2 states have call predecessors, (11), 6 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2025-02-07 17:13:34,290 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 130 transitions. [2025-02-07 17:13:34,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-07 17:13:34,291 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:34,291 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, 1] [2025-02-07 17:13:34,297 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 17:13:34,495 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,SelfDestructingSolverStorable9 [2025-02-07 17:13:34,495 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:34,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:34,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1116082542, now seen corresponding path program 1 times [2025-02-07 17:13:34,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:34,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775318135] [2025-02-07 17:13:34,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:34,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:34,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-07 17:13:34,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:13:34,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:34,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:34,560 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 17:13:34,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:34,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775318135] [2025-02-07 17:13:34,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775318135] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:13:34,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948214229] [2025-02-07 17:13:34,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:34,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:34,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:34,563 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 17:13:34,565 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 17:13:34,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-07 17:13:34,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:13:34,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:34,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:34,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 17:13:34,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:34,653 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 17:13:34,653 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 17:13:34,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948214229] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:13:34,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:13:34,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-07 17:13:34,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530079220] [2025-02-07 17:13:34,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:13:34,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 17:13:34,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:34,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 17:13:34,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-07 17:13:34,655 INFO L87 Difference]: Start difference. First operand 108 states and 130 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 17:13:34,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:34,687 INFO L93 Difference]: Finished difference Result 151 states and 183 transitions. [2025-02-07 17:13:34,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 17:13:34,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 56 [2025-02-07 17:13:34,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:34,689 INFO L225 Difference]: With dead ends: 151 [2025-02-07 17:13:34,689 INFO L226 Difference]: Without dead ends: 108 [2025-02-07 17:13:34,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-07 17:13:34,690 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:34,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:13:34,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-02-07 17:13:34,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2025-02-07 17:13:34,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 86 states have (on average 1.186046511627907) internal successors, (102), 86 states have internal predecessors, (102), 11 states have call successors, (11), 9 states have call predecessors, (11), 10 states have return successors, (15), 12 states have call predecessors, (15), 11 states have call successors, (15) [2025-02-07 17:13:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 128 transitions. [2025-02-07 17:13:34,714 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 128 transitions. Word has length 56 [2025-02-07 17:13:34,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:34,715 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 128 transitions. [2025-02-07 17:13:34,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 17:13:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 128 transitions. [2025-02-07 17:13:34,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-07 17:13:34,716 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:34,716 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, 1] [2025-02-07 17:13:34,723 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 17:13:34,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-07 17:13:34,920 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:34,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:34,920 INFO L85 PathProgramCache]: Analyzing trace with hash -736153068, now seen corresponding path program 1 times [2025-02-07 17:13:34,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:34,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590001614] [2025-02-07 17:13:34,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:34,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:34,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-07 17:13:34,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:13:34,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:34,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:34,979 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 17:13:34,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:34,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590001614] [2025-02-07 17:13:34,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590001614] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:13:34,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130263036] [2025-02-07 17:13:34,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:34,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:34,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:34,982 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 17:13:34,984 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 17:13:35,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-07 17:13:35,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:13:35,054 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:35,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:35,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-07 17:13:35,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:35,063 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 17:13:35,063 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 17:13:35,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130263036] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:13:35,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:13:35,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2025-02-07 17:13:35,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415844753] [2025-02-07 17:13:35,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:13:35,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 17:13:35,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:35,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 17:13:35,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:13:35,065 INFO L87 Difference]: Start difference. First operand 108 states and 128 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 17:13:35,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:35,095 INFO L93 Difference]: Finished difference Result 164 states and 194 transitions. [2025-02-07 17:13:35,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 17:13:35,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 56 [2025-02-07 17:13:35,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:35,097 INFO L225 Difference]: With dead ends: 164 [2025-02-07 17:13:35,097 INFO L226 Difference]: Without dead ends: 102 [2025-02-07 17:13:35,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 17:13:35,098 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:35,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 121 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:13:35,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-02-07 17:13:35,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2025-02-07 17:13:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 80 states have (on average 1.1625) internal successors, (93), 80 states have internal predecessors, (93), 10 states have call successors, (10), 8 states have call predecessors, (10), 9 states have return successors, (13), 11 states have call predecessors, (13), 10 states have call successors, (13) [2025-02-07 17:13:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2025-02-07 17:13:35,119 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 56 [2025-02-07 17:13:35,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:35,119 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2025-02-07 17:13:35,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 17:13:35,119 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2025-02-07 17:13:35,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-07 17:13:35,120 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:35,120 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, 1] [2025-02-07 17:13:35,128 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 17:13:35,320 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,SelfDestructingSolverStorable11 [2025-02-07 17:13:35,321 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:35,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:35,322 INFO L85 PathProgramCache]: Analyzing trace with hash -154468525, now seen corresponding path program 1 times [2025-02-07 17:13:35,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:35,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54639964] [2025-02-07 17:13:35,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:35,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:35,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-07 17:13:35,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:13:35,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:35,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:35,450 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 17:13:35,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:35,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54639964] [2025-02-07 17:13:35,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54639964] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:13:35,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694962234] [2025-02-07 17:13:35,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:35,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:35,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:35,455 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 17:13:35,457 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 17:13:35,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-07 17:13:35,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:13:35,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:35,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:35,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-07 17:13:35,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-07 17:13:35,694 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:13:35,813 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-02-07 17:13:35,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694962234] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:13:35,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:13:35,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 7] total 16 [2025-02-07 17:13:35,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309722843] [2025-02-07 17:13:35,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:13:35,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-07 17:13:35,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:35,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-07 17:13:35,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2025-02-07 17:13:35,814 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-07 17:13:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:36,191 INFO L93 Difference]: Finished difference Result 243 states and 289 transitions. [2025-02-07 17:13:36,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-07 17:13:36,192 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 56 [2025-02-07 17:13:36,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:36,193 INFO L225 Difference]: With dead ends: 243 [2025-02-07 17:13:36,193 INFO L226 Difference]: Without dead ends: 200 [2025-02-07 17:13:36,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2025-02-07 17:13:36,194 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 25 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:36,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 273 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 17:13:36,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-02-07 17:13:36,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 102. [2025-02-07 17:13:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 82 states have (on average 1.1585365853658536) internal successors, (95), 81 states have internal predecessors, (95), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2025-02-07 17:13:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2025-02-07 17:13:36,222 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 56 [2025-02-07 17:13:36,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:36,222 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2025-02-07 17:13:36,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 4 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-07 17:13:36,222 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2025-02-07 17:13:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-07 17:13:36,223 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:36,223 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, 1] [2025-02-07 17:13:36,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-07 17:13:36,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:36,428 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:36,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:36,428 INFO L85 PathProgramCache]: Analyzing trace with hash 508611413, now seen corresponding path program 1 times [2025-02-07 17:13:36,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:36,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818856870] [2025-02-07 17:13:36,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:36,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:36,436 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-07 17:13:36,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:13:36,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:36,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-07 17:13:36,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:36,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818856870] [2025-02-07 17:13:36,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818856870] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:13:36,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925396878] [2025-02-07 17:13:36,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:13:36,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:36,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:36,653 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 17:13:36,655 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 17:13:36,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-02-07 17:13:36,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-02-07 17:13:36,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:36,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:36,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-07 17:13:36,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-07 17:13:36,864 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:13:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-07 17:13:37,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925396878] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:13:37,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:13:37,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 22 [2025-02-07 17:13:37,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764518132] [2025-02-07 17:13:37,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:13:37,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-07 17:13:37,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:37,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-07 17:13:37,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2025-02-07 17:13:37,080 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 5 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2025-02-07 17:13:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:37,443 INFO L93 Difference]: Finished difference Result 258 states and 300 transitions. [2025-02-07 17:13:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-07 17:13:37,444 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 5 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 56 [2025-02-07 17:13:37,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:37,447 INFO L225 Difference]: With dead ends: 258 [2025-02-07 17:13:37,447 INFO L226 Difference]: Without dead ends: 209 [2025-02-07 17:13:37,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2025-02-07 17:13:37,448 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:37,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 224 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 17:13:37,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2025-02-07 17:13:37,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 169. [2025-02-07 17:13:37,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.1729323308270676) internal successors, (156), 133 states have internal predecessors, (156), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) [2025-02-07 17:13:37,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 196 transitions. [2025-02-07 17:13:37,497 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 196 transitions. Word has length 56 [2025-02-07 17:13:37,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:37,498 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 196 transitions. [2025-02-07 17:13:37,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 5 states have call successors, (11), 3 states have call predecessors, (11), 9 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2025-02-07 17:13:37,498 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 196 transitions. [2025-02-07 17:13:37,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-02-07 17:13:37,499 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:37,499 INFO L218 NwaCegarLoop]: trace histogram [5, 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, 1] [2025-02-07 17:13:37,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-07 17:13:37,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:37,700 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:37,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:37,700 INFO L85 PathProgramCache]: Analyzing trace with hash -170858407, now seen corresponding path program 4 times [2025-02-07 17:13:37,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:37,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75652993] [2025-02-07 17:13:37,700 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:13:37,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:37,708 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-02-07 17:13:37,714 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 51 of 57 statements. [2025-02-07 17:13:37,715 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-07 17:13:37,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:37,806 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-07 17:13:37,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:37,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75652993] [2025-02-07 17:13:37,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75652993] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:13:37,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719300488] [2025-02-07 17:13:37,806 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:13:37,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:37,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:37,809 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 17:13:37,811 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 17:13:37,864 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 57 statements into 2 equivalence classes. [2025-02-07 17:13:37,882 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 51 of 57 statements. [2025-02-07 17:13:37,882 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-07 17:13:37,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:37,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 17:13:37,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:37,976 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 17:13:37,976 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:13:38,075 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-07 17:13:38,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719300488] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:13:38,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:13:38,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-02-07 17:13:38,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156753461] [2025-02-07 17:13:38,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:13:38,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-07 17:13:38,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:38,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-07 17:13:38,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-02-07 17:13:38,077 INFO L87 Difference]: Start difference. First operand 169 states and 196 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-07 17:13:38,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:38,223 INFO L93 Difference]: Finished difference Result 265 states and 308 transitions. [2025-02-07 17:13:38,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 17:13:38,225 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 57 [2025-02-07 17:13:38,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:38,226 INFO L225 Difference]: With dead ends: 265 [2025-02-07 17:13:38,226 INFO L226 Difference]: Without dead ends: 182 [2025-02-07 17:13:38,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 104 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 17:13:38,227 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:38,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 120 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:13:38,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2025-02-07 17:13:38,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2025-02-07 17:13:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 143 states have (on average 1.1538461538461537) internal successors, (165), 143 states have internal predecessors, (165), 19 states have call successors, (19), 16 states have call predecessors, (19), 16 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) [2025-02-07 17:13:38,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 205 transitions. [2025-02-07 17:13:38,271 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 205 transitions. Word has length 57 [2025-02-07 17:13:38,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:38,271 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 205 transitions. [2025-02-07 17:13:38,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-07 17:13:38,271 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 205 transitions. [2025-02-07 17:13:38,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-07 17:13:38,272 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:38,272 INFO L218 NwaCegarLoop]: trace histogram [6, 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, 1] [2025-02-07 17:13:38,280 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 17:13:38,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:38,473 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:38,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:38,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1973773167, now seen corresponding path program 2 times [2025-02-07 17:13:38,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:38,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719809111] [2025-02-07 17:13:38,473 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:13:38,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:38,482 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 58 statements into 2 equivalence classes. [2025-02-07 17:13:38,493 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 58 of 58 statements. [2025-02-07 17:13:38,493 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:13:38,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-07 17:13:38,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:38,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719809111] [2025-02-07 17:13:38,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719809111] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:13:38,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732311616] [2025-02-07 17:13:38,612 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:13:38,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:38,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:38,615 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 17:13:38,617 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 17:13:38,672 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 58 statements into 2 equivalence classes. [2025-02-07 17:13:38,700 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 58 of 58 statements. [2025-02-07 17:13:38,700 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:13:38,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:38,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 17:13:38,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:38,778 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-07 17:13:38,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:13:38,836 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-07 17:13:38,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732311616] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:13:38,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:13:38,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-02-07 17:13:38,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316876358] [2025-02-07 17:13:38,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:13:38,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-07 17:13:38,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:38,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-07 17:13:38,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2025-02-07 17:13:38,838 INFO L87 Difference]: Start difference. First operand 179 states and 205 transitions. Second operand has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-07 17:13:39,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:39,032 INFO L93 Difference]: Finished difference Result 305 states and 353 transitions. [2025-02-07 17:13:39,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-07 17:13:39,032 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 58 [2025-02-07 17:13:39,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:39,034 INFO L225 Difference]: With dead ends: 305 [2025-02-07 17:13:39,034 INFO L226 Difference]: Without dead ends: 165 [2025-02-07 17:13:39,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2025-02-07 17:13:39,035 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 22 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:39,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 197 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:13:39,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-02-07 17:13:39,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 150. [2025-02-07 17:13:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 123 states have (on average 1.170731707317073) internal successors, (144), 122 states have internal predecessors, (144), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2025-02-07 17:13:39,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 175 transitions. [2025-02-07 17:13:39,063 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 175 transitions. Word has length 58 [2025-02-07 17:13:39,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:39,063 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 175 transitions. [2025-02-07 17:13:39,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.65) internal successors, (53), 20 states have internal predecessors, (53), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-07 17:13:39,063 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 175 transitions. [2025-02-07 17:13:39,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-07 17:13:39,064 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:39,064 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 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] [2025-02-07 17:13:39,072 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 17:13:39,265 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,SelfDestructingSolverStorable15 [2025-02-07 17:13:39,265 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:39,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:39,265 INFO L85 PathProgramCache]: Analyzing trace with hash 480695987, now seen corresponding path program 5 times [2025-02-07 17:13:39,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:39,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033889603] [2025-02-07 17:13:39,266 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 17:13:39,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:39,274 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 60 statements into 9 equivalence classes. [2025-02-07 17:13:39,289 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 26 of 60 statements. [2025-02-07 17:13:39,289 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-07 17:13:39,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-07 17:13:39,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:39,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033889603] [2025-02-07 17:13:39,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033889603] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:13:39,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444715831] [2025-02-07 17:13:39,353 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 17:13:39,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:39,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:39,356 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 17:13:39,358 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 17:13:39,414 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 60 statements into 9 equivalence classes. [2025-02-07 17:13:39,445 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 26 of 60 statements. [2025-02-07 17:13:39,445 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-02-07 17:13:39,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:39,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 17:13:39,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 41 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-07 17:13:39,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:13:39,529 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-07 17:13:39,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444715831] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:13:39,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:13:39,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2025-02-07 17:13:39,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193488379] [2025-02-07 17:13:39,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:13:39,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-07 17:13:39,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:39,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-07 17:13:39,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-02-07 17:13:39,531 INFO L87 Difference]: Start difference. First operand 150 states and 175 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-07 17:13:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:39,656 INFO L93 Difference]: Finished difference Result 184 states and 212 transitions. [2025-02-07 17:13:39,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-07 17:13:39,656 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2025-02-07 17:13:39,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:39,658 INFO L225 Difference]: With dead ends: 184 [2025-02-07 17:13:39,658 INFO L226 Difference]: Without dead ends: 145 [2025-02-07 17:13:39,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 111 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2025-02-07 17:13:39,658 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 11 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:39,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 225 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:13:39,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-02-07 17:13:39,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2025-02-07 17:13:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 118 states have (on average 1.1271186440677967) internal successors, (133), 117 states have internal predecessors, (133), 15 states have call successors, (15), 12 states have call predecessors, (15), 11 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2025-02-07 17:13:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 164 transitions. [2025-02-07 17:13:39,690 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 164 transitions. Word has length 60 [2025-02-07 17:13:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:39,691 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 164 transitions. [2025-02-07 17:13:39,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-07 17:13:39,691 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 164 transitions. [2025-02-07 17:13:39,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-07 17:13:39,692 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:39,692 INFO L218 NwaCegarLoop]: trace histogram [8, 4, 3, 3, 3, 3, 3, 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] [2025-02-07 17:13:39,700 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 17:13:39,892 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,SelfDestructingSolverStorable16 [2025-02-07 17:13:39,893 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:39,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:39,893 INFO L85 PathProgramCache]: Analyzing trace with hash -525489681, now seen corresponding path program 6 times [2025-02-07 17:13:39,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:39,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679336887] [2025-02-07 17:13:39,894 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 17:13:39,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:39,903 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 62 statements into 9 equivalence classes. [2025-02-07 17:13:39,942 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 62 of 62 statements. [2025-02-07 17:13:39,942 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-02-07 17:13:39,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-07 17:13:40,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:13:40,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679336887] [2025-02-07 17:13:40,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679336887] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:13:40,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227569582] [2025-02-07 17:13:40,054 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 17:13:40,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:40,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:40,057 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 17:13:40,059 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 17:13:40,118 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 62 statements into 9 equivalence classes. [2025-02-07 17:13:40,829 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 62 of 62 statements. [2025-02-07 17:13:40,829 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-02-07 17:13:40,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:40,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 17:13:40,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 54 proven. 15 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-07 17:13:40,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:13:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 37 proven. 24 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-02-07 17:13:40,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227569582] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:13:40,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:13:40,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2025-02-07 17:13:40,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217947472] [2025-02-07 17:13:40,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:13:40,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 17:13:40,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:13:40,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 17:13:40,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2025-02-07 17:13:40,960 INFO L87 Difference]: Start difference. First operand 145 states and 164 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-07 17:13:41,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:13:41,116 INFO L93 Difference]: Finished difference Result 181 states and 201 transitions. [2025-02-07 17:13:41,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-07 17:13:41,117 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 62 [2025-02-07 17:13:41,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:13:41,118 INFO L225 Difference]: With dead ends: 181 [2025-02-07 17:13:41,118 INFO L226 Difference]: Without dead ends: 141 [2025-02-07 17:13:41,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 117 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2025-02-07 17:13:41,118 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:13:41,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 293 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:13:41,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-02-07 17:13:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 138. [2025-02-07 17:13:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 113 states have (on average 1.1061946902654867) internal successors, (125), 111 states have internal predecessors, (125), 14 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (15), 15 states have call predecessors, (15), 14 states have call successors, (15) [2025-02-07 17:13:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 154 transitions. [2025-02-07 17:13:41,146 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 154 transitions. Word has length 62 [2025-02-07 17:13:41,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:13:41,146 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 154 transitions. [2025-02-07 17:13:41,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-07 17:13:41,146 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 154 transitions. [2025-02-07 17:13:41,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-07 17:13:41,147 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:13:41,147 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 3, 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] [2025-02-07 17:13:41,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-07 17:13:41,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-07 17:13:41,347 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:13:41,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:13:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2097179737, now seen corresponding path program 7 times [2025-02-07 17:13:41,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:13:41,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174259786] [2025-02-07 17:13:41,348 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 17:13:41,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:13:41,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-07 17:13:41,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-07 17:13:41,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:41,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 17:13:41,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112180970] [2025-02-07 17:13:41,395 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 17:13:41,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:13:41,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:13:41,398 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 17:13:41,399 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 17:13:41,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-07 17:13:42,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-07 17:13:42,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:13:42,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:13:42,328 WARN L254 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 164 conjuncts are in the unsatisfiable core [2025-02-07 17:13:42,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:13:42,389 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 17:13:42,430 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 17:13:42,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:42,475 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 17:13:42,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:42,572 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 33 treesize of output 38 [2025-02-07 17:13:42,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:42,613 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 40 treesize of output 48 [2025-02-07 17:13:42,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:42,688 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 47 treesize of output 58 [2025-02-07 17:13:42,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:42,878 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 54 treesize of output 68 [2025-02-07 17:13:42,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:42,948 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 61 treesize of output 78 [2025-02-07 17:13:43,028 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:43,028 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 68 treesize of output 88 [2025-02-07 17:13:44,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:44,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:44,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:44,452 INFO L349 Elim1Store]: treesize reduction 336, result has 31.8 percent of original size [2025-02-07 17:13:44,453 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 144 treesize of output 266 [2025-02-07 17:13:45,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 167 [2025-02-07 17:13:45,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:13:45,967 INFO L349 Elim1Store]: treesize reduction 318, result has 0.3 percent of original size [2025-02-07 17:13:45,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 10 select indices, 10 select index equivalence classes, 54 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 12 case distinctions, treesize of input 167 treesize of output 294 [2025-02-07 17:13:51,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:13:51,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 36 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 396 treesize of output 292 [2025-02-07 17:13:54,681 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 8 proven. 151 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 17:13:54,681 INFO L312 TraceCheckSpWp]: Computing backward predicates...