./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array12_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/array12_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 4cd544b9fc2c4c641198812054f6f7e3a4b46d14448acc5758393bf17818405b --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 17:11:16,506 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 17:11:16,563 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 17:11:16,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 17:11:16,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 17:11:16,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 17:11:16,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 17:11:16,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 17:11:16,583 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 17:11:16,583 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 17:11:16,583 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 17:11:16,583 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 17:11:16,583 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 17:11:16,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 17:11:16,583 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 17:11:16,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 17:11:16,584 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 17:11:16,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 17:11:16,585 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 17:11:16,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 17:11:16,585 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 17:11:16,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 17:11:16,585 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 17:11:16,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 17:11:16,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 17:11:16,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 17:11:16,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 17:11:16,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 17:11:16,585 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 -> 4cd544b9fc2c4c641198812054f6f7e3a4b46d14448acc5758393bf17818405b [2025-02-07 17:11:16,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 17:11:16,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 17:11:16,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 17:11:16,829 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 17:11:16,829 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 17:11:16,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array12_pattern.c [2025-02-07 17:11:17,971 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/598a4cf03/45f4fd454cef4033ab8a1f595d261434/FLAGd3f615500 [2025-02-07 17:11:18,173 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 17:11:18,174 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-patterns/array12_pattern.c [2025-02-07 17:11:18,180 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/598a4cf03/45f4fd454cef4033ab8a1f595d261434/FLAGd3f615500 [2025-02-07 17:11:18,209 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/598a4cf03/45f4fd454cef4033ab8a1f595d261434 [2025-02-07 17:11:18,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 17:11:18,212 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 17:11:18,213 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 17:11:18,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 17:11:18,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 17:11:18,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 05:11:18" (1/1) ... [2025-02-07 17:11:18,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d13f542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18, skipping insertion in model container [2025-02-07 17:11:18,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 05:11:18" (1/1) ... [2025-02-07 17:11:18,229 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 17:11:18,330 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/array12_pattern.c[1349,1362] [2025-02-07 17:11:18,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 17:11:18,353 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 17:11:18,360 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/array12_pattern.c[1349,1362] [2025-02-07 17:11:18,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 17:11:18,380 INFO L204 MainTranslator]: Completed translation [2025-02-07 17:11:18,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18 WrapperNode [2025-02-07 17:11:18,381 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 17:11:18,383 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 17:11:18,383 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 17:11:18,383 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 17:11:18,387 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18" (1/1) ... [2025-02-07 17:11:18,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18" (1/1) ... [2025-02-07 17:11:18,407 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2025-02-07 17:11:18,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 17:11:18,409 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 17:11:18,409 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 17:11:18,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 17:11:18,414 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18" (1/1) ... [2025-02-07 17:11:18,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18" (1/1) ... [2025-02-07 17:11:18,415 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18" (1/1) ... [2025-02-07 17:11:18,426 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2025-02-07 17:11:18,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18" (1/1) ... [2025-02-07 17:11:18,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18" (1/1) ... [2025-02-07 17:11:18,431 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18" (1/1) ... [2025-02-07 17:11:18,432 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18" (1/1) ... [2025-02-07 17:11:18,433 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18" (1/1) ... [2025-02-07 17:11:18,434 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18" (1/1) ... [2025-02-07 17:11:18,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 17:11:18,437 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 17:11:18,437 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 17:11:18,437 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 17:11:18,438 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18" (1/1) ... [2025-02-07 17:11:18,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 17:11:18,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:18,457 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 17:11:18,460 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 17:11:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 17:11:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-07 17:11:18,475 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-07 17:11:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 17:11:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 17:11:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 17:11:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 17:11:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 17:11:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 17:11:18,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 17:11:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 17:11:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 17:11:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 17:11:18,518 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 17:11:18,520 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 17:11:18,638 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L45: 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 17:11:18,648 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2025-02-07 17:11:18,648 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 17:11:18,656 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 17:11:18,657 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 17:11:18,657 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:11:18 BoogieIcfgContainer [2025-02-07 17:11:18,657 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 17:11:18,659 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 17:11:18,659 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 17:11:18,662 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 17:11:18,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 05:11:18" (1/3) ... [2025-02-07 17:11:18,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db824fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 05:11:18, skipping insertion in model container [2025-02-07 17:11:18,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 05:11:18" (2/3) ... [2025-02-07 17:11:18,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db824fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 05:11:18, skipping insertion in model container [2025-02-07 17:11:18,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 05:11:18" (3/3) ... [2025-02-07 17:11:18,664 INFO L128 eAbstractionObserver]: Analyzing ICFG array12_pattern.c [2025-02-07 17:11:18,675 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 17:11:18,677 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array12_pattern.c that has 2 procedures, 24 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-02-07 17:11:18,716 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 17:11:18,725 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;@426f358, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 17:11:18,725 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 17:11:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:18,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-07 17:11:18,732 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:18,733 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:18,733 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:18,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:18,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1891125664, now seen corresponding path program 1 times [2025-02-07 17:11:18,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:18,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716221385] [2025-02-07 17:11:18,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:18,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:18,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-07 17:11:18,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-07 17:11:18,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:18,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:18,824 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 17:11:18,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:18,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716221385] [2025-02-07 17:11:18,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716221385] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:11:18,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 17:11:18,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 17:11:18,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549295665] [2025-02-07 17:11:18,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:11:18,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 17:11:18,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:18,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 17:11:18,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 17:11:18,844 INFO L87 Difference]: Start difference. First operand has 24 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 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 17:11:18,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:18,856 INFO L93 Difference]: Finished difference Result 46 states and 66 transitions. [2025-02-07 17:11:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 17:11:18,857 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 17:11:18,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:18,860 INFO L225 Difference]: With dead ends: 46 [2025-02-07 17:11:18,861 INFO L226 Difference]: Without dead ends: 20 [2025-02-07 17:11:18,866 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 17:11:18,867 INFO L435 NwaCegarLoop]: 30 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, 30 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 17:11:18,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:11:18,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-02-07 17:11:18,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-02-07 17:11:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:18,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2025-02-07 17:11:18,890 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 13 [2025-02-07 17:11:18,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:18,890 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2025-02-07 17:11:18,890 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 17:11:18,890 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2025-02-07 17:11:18,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-07 17:11:18,892 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:18,892 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:18,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 17:11:18,892 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:18,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:18,893 INFO L85 PathProgramCache]: Analyzing trace with hash -143261512, now seen corresponding path program 1 times [2025-02-07 17:11:18,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:18,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977974680] [2025-02-07 17:11:18,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:18,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:18,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-07 17:11:18,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-07 17:11:18,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:18,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 17:11:19,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977974680] [2025-02-07 17:11:19,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977974680] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:19,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508705724] [2025-02-07 17:11:19,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:19,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:19,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:19,214 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 17:11:19,228 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 17:11:19,274 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-07 17:11:19,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-07 17:11:19,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:19,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:19,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 17:11:19,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 17:11:19,397 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 17:11:19,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508705724] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:11:19,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:11:19,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-02-07 17:11:19,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028910384] [2025-02-07 17:11:19,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:11:19,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 17:11:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:19,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 17:11:19,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-02-07 17:11:19,398 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 17:11:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:19,467 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2025-02-07 17:11:19,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 17:11:19,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2025-02-07 17:11:19,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:19,467 INFO L225 Difference]: With dead ends: 48 [2025-02-07 17:11:19,468 INFO L226 Difference]: Without dead ends: 27 [2025-02-07 17:11:19,468 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-02-07 17:11:19,468 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:19,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 70 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:11:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-07 17:11:19,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2025-02-07 17:11:19,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2025-02-07 17:11:19,473 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 25 [2025-02-07 17:11:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:19,473 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2025-02-07 17:11:19,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 17:11:19,474 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2025-02-07 17:11:19,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-07 17:11:19,474 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:19,474 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:19,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-07 17:11:19,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:19,675 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:19,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:19,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2063923722, now seen corresponding path program 1 times [2025-02-07 17:11:19,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:19,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162635060] [2025-02-07 17:11:19,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:19,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:19,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-07 17:11:19,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-07 17:11:19,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:19,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 17:11:19,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:19,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162635060] [2025-02-07 17:11:19,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162635060] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:19,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82358526] [2025-02-07 17:11:19,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:19,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:19,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:19,807 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 17:11:19,809 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 17:11:19,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-07 17:11:19,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-07 17:11:19,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:19,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:19,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-07 17:11:19,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:11:19,877 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 17:11:19,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82358526] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 17:11:19,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:11:19,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-02-07 17:11:19,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308775409] [2025-02-07 17:11:19,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 17:11:19,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 17:11:19,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:19,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 17:11:19,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-07 17:11:19,878 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 17:11:19,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:19,912 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2025-02-07 17:11:19,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 17:11:19,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2025-02-07 17:11:19,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:19,913 INFO L225 Difference]: With dead ends: 40 [2025-02-07 17:11:19,913 INFO L226 Difference]: Without dead ends: 23 [2025-02-07 17:11:19,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-07 17:11:19,914 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:19,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 45 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 17:11:19,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-02-07 17:11:19,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-02-07 17:11:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:19,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2025-02-07 17:11:19,917 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 27 [2025-02-07 17:11:19,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:19,917 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2025-02-07 17:11:19,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 17:11:19,918 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2025-02-07 17:11:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-07 17:11:19,918 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:19,918 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:19,924 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 17:11:20,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:20,119 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:20,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:20,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1071283107, now seen corresponding path program 1 times [2025-02-07 17:11:20,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:20,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758533269] [2025-02-07 17:11:20,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:20,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:20,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-07 17:11:20,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 17:11:20,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:20,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-07 17:11:20,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:11:20,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758533269] [2025-02-07 17:11:20,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758533269] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:11:20,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780932119] [2025-02-07 17:11:20,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:20,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:20,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:20,193 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 17:11:20,195 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 17:11:20,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-07 17:11:20,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 17:11:20,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:20,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:20,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-07 17:11:20,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-07 17:11:20,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:11:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-07 17:11:20,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780932119] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:11:20,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:11:20,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-07 17:11:20,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298766704] [2025-02-07 17:11:20,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:11:20,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-07 17:11:20,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:11:20,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-07 17:11:20,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-02-07 17:11:20,352 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:11:20,428 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2025-02-07 17:11:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-07 17:11:20,428 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 28 [2025-02-07 17:11:20,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:11:20,429 INFO L225 Difference]: With dead ends: 35 [2025-02-07 17:11:20,429 INFO L226 Difference]: Without dead ends: 32 [2025-02-07 17:11:20,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-02-07 17:11:20,430 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:11:20,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 67 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:11:20,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-07 17:11:20,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2025-02-07 17:11:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:11:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2025-02-07 17:11:20,434 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 28 [2025-02-07 17:11:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:11:20,434 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2025-02-07 17:11:20,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:11:20,434 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2025-02-07 17:11:20,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-07 17:11:20,435 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:11:20,435 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:11:20,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-07 17:11:20,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:20,635 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:11:20,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:11:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1396644519, now seen corresponding path program 1 times [2025-02-07 17:11:20,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:11:20,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908716538] [2025-02-07 17:11:20,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:20,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:11:20,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-07 17:11:20,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-07 17:11:20,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:20,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 17:11:20,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572089203] [2025-02-07 17:11:20,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 17:11:20,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:11:20,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:11:20,658 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 17:11:20,659 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 17:11:20,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-07 17:11:20,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-07 17:11:20,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 17:11:20,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:11:20,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-07 17:11:20,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:11:20,786 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 17:11:21,165 INFO L349 Elim1Store]: treesize reduction 156, result has 26.4 percent of original size [2025-02-07 17:11:21,165 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 4 case distinctions, treesize of input 45 treesize of output 77 [2025-02-07 17:11:22,185 INFO L349 Elim1Store]: treesize reduction 36, result has 71.0 percent of original size [2025-02-07 17:11:22,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 142 treesize of output 170 [2025-02-07 17:11:43,978 WARN L286 SmtUtils]: Spent 7.87s on a formula simplification that was a NOOP. DAG size: 134 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-02-07 17:11:58,776 WARN L286 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-02-07 17:12:13,493 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:12:13,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:14,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:14,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908716538] [2025-02-07 17:12:14,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 17:12:14,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572089203] [2025-02-07 17:12:14,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572089203] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:14,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-07 17:12:14,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2025-02-07 17:12:14,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984949590] [2025-02-07 17:12:14,011 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:14,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-07 17:12:14,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:14,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-07 17:12:14,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2025-02-07 17:12:14,012 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:12:14,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:14,974 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2025-02-07 17:12:14,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-07 17:12:14,974 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2025-02-07 17:12:14,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:14,975 INFO L225 Difference]: With dead ends: 52 [2025-02-07 17:12:14,975 INFO L226 Difference]: Without dead ends: 49 [2025-02-07 17:12:14,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2025-02-07 17:12:14,976 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:14,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 95 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-07 17:12:14,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-02-07 17:12:14,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2025-02-07 17:12:14,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 17:12:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2025-02-07 17:12:14,991 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2025-02-07 17:12:14,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:14,991 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2025-02-07 17:12:14,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 17:12:14,992 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2025-02-07 17:12:14,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-07 17:12:14,992 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:14,992 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:14,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-07 17:12:15,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:15,197 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:15,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:15,197 INFO L85 PathProgramCache]: Analyzing trace with hash 347262399, now seen corresponding path program 2 times [2025-02-07 17:12:15,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:15,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679450020] [2025-02-07 17:12:15,198 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:12:15,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:15,203 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-07 17:12:15,209 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 17:12:15,209 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:12:15,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 17:12:15,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:15,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679450020] [2025-02-07 17:12:15,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679450020] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:15,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729476846] [2025-02-07 17:12:15,272 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 17:12:15,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:15,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:15,278 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:15,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-07 17:12:15,311 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-07 17:12:15,323 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 17:12:15,323 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 17:12:15,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:15,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 17:12:15,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 17:12:15,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:15,398 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 17:12:15,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729476846] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:12:15,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:12:15,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-02-07 17:12:15,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783003936] [2025-02-07 17:12:15,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:15,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-07 17:12:15,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:15,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-07 17:12:15,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-02-07 17:12:15,400 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:12:15,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:15,507 INFO L93 Difference]: Finished difference Result 109 states and 135 transitions. [2025-02-07 17:12:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-07 17:12:15,507 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2025-02-07 17:12:15,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:15,508 INFO L225 Difference]: With dead ends: 109 [2025-02-07 17:12:15,508 INFO L226 Difference]: Without dead ends: 76 [2025-02-07 17:12:15,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-02-07 17:12:15,508 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:15,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 87 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:12:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-02-07 17:12:15,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2025-02-07 17:12:15,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 58 states have internal predecessors, (71), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-07 17:12:15,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2025-02-07 17:12:15,539 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 32 [2025-02-07 17:12:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:15,539 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2025-02-07 17:12:15,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:12:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2025-02-07 17:12:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-07 17:12:15,540 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:15,540 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:15,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-07 17:12:15,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:15,741 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:15,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:15,741 INFO L85 PathProgramCache]: Analyzing trace with hash -165005384, now seen corresponding path program 3 times [2025-02-07 17:12:15,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:15,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633547486] [2025-02-07 17:12:15,742 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:12:15,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:15,748 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 5 equivalence classes. [2025-02-07 17:12:15,754 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 29 of 33 statements. [2025-02-07 17:12:15,754 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 17:12:15,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 17:12:15,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:15,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633547486] [2025-02-07 17:12:15,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633547486] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:15,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851250241] [2025-02-07 17:12:15,822 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 17:12:15,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:15,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:15,824 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:15,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-07 17:12:15,850 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 5 equivalence classes. [2025-02-07 17:12:15,863 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 29 of 33 statements. [2025-02-07 17:12:15,864 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 17:12:15,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:15,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 17:12:15,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 17:12:15,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 17:12:15,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851250241] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:12:15,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:12:15,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2025-02-07 17:12:15,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211944341] [2025-02-07 17:12:15,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:15,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-07 17:12:15,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:15,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-07 17:12:15,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-02-07 17:12:15,943 INFO L87 Difference]: Start difference. First operand 73 states and 89 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-07 17:12:16,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:16,108 INFO L93 Difference]: Finished difference Result 125 states and 159 transitions. [2025-02-07 17:12:16,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 17:12:16,109 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2025-02-07 17:12:16,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:16,110 INFO L225 Difference]: With dead ends: 125 [2025-02-07 17:12:16,110 INFO L226 Difference]: Without dead ends: 90 [2025-02-07 17:12:16,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-02-07 17:12:16,110 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:16,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 158 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:12:16,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-02-07 17:12:16,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2025-02-07 17:12:16,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 66 states have internal predecessors, (83), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-07 17:12:16,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2025-02-07 17:12:16,162 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 33 [2025-02-07 17:12:16,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:16,162 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2025-02-07 17:12:16,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-07 17:12:16,162 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2025-02-07 17:12:16,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-07 17:12:16,163 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:16,163 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] [2025-02-07 17:12:16,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-07 17:12:16,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-07 17:12:16,363 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:16,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:16,364 INFO L85 PathProgramCache]: Analyzing trace with hash -2116589539, now seen corresponding path program 4 times [2025-02-07 17:12:16,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:16,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071748670] [2025-02-07 17:12:16,364 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:12:16,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:16,368 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-02-07 17:12:16,371 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 30 of 34 statements. [2025-02-07 17:12:16,371 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-07 17:12:16,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-07 17:12:16,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071748670] [2025-02-07 17:12:16,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071748670] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:16,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586809326] [2025-02-07 17:12:16,418 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 17:12:16,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:16,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:16,420 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:16,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-07 17:12:16,445 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-02-07 17:12:16,451 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 30 of 34 statements. [2025-02-07 17:12:16,451 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-07 17:12:16,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:16,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 17:12:16,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 17:12:16,488 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:16,521 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-07 17:12:16,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586809326] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:12:16,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:12:16,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-02-07 17:12:16,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690956607] [2025-02-07 17:12:16,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:16,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-07 17:12:16,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:16,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-07 17:12:16,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-02-07 17:12:16,522 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:12:16,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:16,641 INFO L93 Difference]: Finished difference Result 95 states and 115 transitions. [2025-02-07 17:12:16,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-07 17:12:16,642 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2025-02-07 17:12:16,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:16,643 INFO L225 Difference]: With dead ends: 95 [2025-02-07 17:12:16,643 INFO L226 Difference]: Without dead ends: 84 [2025-02-07 17:12:16,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2025-02-07 17:12:16,643 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:16,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 73 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:12:16,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-02-07 17:12:16,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2025-02-07 17:12:16,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 66 states have internal predecessors, (82), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-07 17:12:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2025-02-07 17:12:16,676 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 34 [2025-02-07 17:12:16,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:16,676 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2025-02-07 17:12:16,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:12:16,676 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2025-02-07 17:12:16,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-07 17:12:16,677 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:16,677 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:16,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-07 17:12:16,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:16,878 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:16,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:16,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1784642676, now seen corresponding path program 5 times [2025-02-07 17:12:16,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:16,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193404625] [2025-02-07 17:12:16,878 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 17:12:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:16,883 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 7 equivalence classes. [2025-02-07 17:12:16,889 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 27 of 39 statements. [2025-02-07 17:12:16,889 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-07 17:12:16,889 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-07 17:12:16,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 17:12:16,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193404625] [2025-02-07 17:12:16,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193404625] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 17:12:16,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912152984] [2025-02-07 17:12:16,933 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 17:12:16,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:16,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:16,935 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:16,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-07 17:12:16,964 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 7 equivalence classes. [2025-02-07 17:12:16,984 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 27 of 39 statements. [2025-02-07 17:12:16,984 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-07 17:12:16,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:16,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 17:12:16,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:17,026 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 17:12:17,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 17:12:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-07 17:12:17,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912152984] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 17:12:17,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 17:12:17,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-02-07 17:12:17,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193106039] [2025-02-07 17:12:17,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 17:12:17,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-07 17:12:17,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 17:12:17,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-07 17:12:17,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-02-07 17:12:17,064 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:12:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 17:12:17,251 INFO L93 Difference]: Finished difference Result 113 states and 134 transitions. [2025-02-07 17:12:17,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-07 17:12:17,251 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2025-02-07 17:12:17,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 17:12:17,252 INFO L225 Difference]: With dead ends: 113 [2025-02-07 17:12:17,252 INFO L226 Difference]: Without dead ends: 78 [2025-02-07 17:12:17,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2025-02-07 17:12:17,253 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 17:12:17,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 172 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 17:12:17,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-02-07 17:12:17,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2025-02-07 17:12:17,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-07 17:12:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2025-02-07 17:12:17,285 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 39 [2025-02-07 17:12:17,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 17:12:17,285 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2025-02-07 17:12:17,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 17:12:17,286 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2025-02-07 17:12:17,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-07 17:12:17,286 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 17:12:17,286 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 17:12:17,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-07 17:12:17,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:17,487 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 17:12:17,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 17:12:17,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1269625016, now seen corresponding path program 6 times [2025-02-07 17:12:17,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 17:12:17,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747417128] [2025-02-07 17:12:17,487 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 17:12:17,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 17:12:17,492 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 7 equivalence classes. [2025-02-07 17:12:17,522 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 41 of 41 statements. [2025-02-07 17:12:17,522 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-07 17:12:17,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 17:12:17,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618655446] [2025-02-07 17:12:17,523 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 17:12:17,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 17:12:17,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 17:12:17,526 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 17:12:17,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-07 17:12:17,556 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 7 equivalence classes. [2025-02-07 17:12:17,994 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 41 of 41 statements. [2025-02-07 17:12:17,994 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-07 17:12:17,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 17:12:17,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 82 conjuncts are in the unsatisfiable core [2025-02-07 17:12:17,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 17:12:18,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-07 17:12:18,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-07 17:12:18,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:18,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:18,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:12:18,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2025-02-07 17:12:18,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:18,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:18,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:18,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:18,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 17:12:18,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2025-02-07 17:12:18,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:18,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:18,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:18,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:18,988 INFO L349 Elim1Store]: treesize reduction 568, result has 22.2 percent of original size [2025-02-07 17:12:18,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 37 case distinctions, treesize of input 99 treesize of output 201 [2025-02-07 17:12:21,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:21,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:21,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-07 17:12:21,706 INFO L190 IndexEqualityManager]: detected not equals via solver