./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0236.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0236.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9284cc089e563ce2bdd0201592786c36b8d718b3efb8766c887a82d2ff3babc3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 06:23:53,962 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 06:23:54,034 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 06:23:54,041 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 06:23:54,041 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 06:23:54,058 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 06:23:54,059 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 06:23:54,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 06:23:54,059 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 06:23:54,059 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 06:23:54,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 06:23:54,060 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 06:23:54,060 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 06:23:54,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 06:23:54,060 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 06:23:54,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 06:23:54,060 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 06:23:54,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 06:23:54,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 06:23:54,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 06:23:54,060 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 06:23:54,061 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 06:23:54,061 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 06:23:54,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 06:23:54,061 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 06:23:54,061 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 06:23:54,061 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 06:23:54,061 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 06:23:54,061 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 06:23:54,061 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 06:23:54,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 06:23:54,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 06:23:54,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 06:23:54,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:23:54,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 06:23:54,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 06:23:54,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 06:23:54,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 06:23:54,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 06:23:54,062 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 06:23:54,062 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 06:23:54,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 06:23:54,062 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 9284cc089e563ce2bdd0201592786c36b8d718b3efb8766c887a82d2ff3babc3 [2025-02-08 06:23:54,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 06:23:54,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 06:23:54,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 06:23:54,342 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 06:23:54,343 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 06:23:54,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0236.i [2025-02-08 06:23:55,698 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3daa9ef8c/30ca7d1489d6430eac8bcedf18adefb8/FLAG78ffafc0a [2025-02-08 06:23:56,070 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 06:23:56,070 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety/test-0236.i [2025-02-08 06:23:56,088 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3daa9ef8c/30ca7d1489d6430eac8bcedf18adefb8/FLAG78ffafc0a [2025-02-08 06:23:56,106 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3daa9ef8c/30ca7d1489d6430eac8bcedf18adefb8 [2025-02-08 06:23:56,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 06:23:56,110 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 06:23:56,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 06:23:56,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 06:23:56,116 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 06:23:56,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:23:56" (1/1) ... [2025-02-08 06:23:56,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32182076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56, skipping insertion in model container [2025-02-08 06:23:56,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:23:56" (1/1) ... [2025-02-08 06:23:56,157 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 06:23:56,473 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 06:23:56,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:23:56,512 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 06:23:56,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:23:56,601 INFO L204 MainTranslator]: Completed translation [2025-02-08 06:23:56,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56 WrapperNode [2025-02-08 06:23:56,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 06:23:56,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 06:23:56,603 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 06:23:56,603 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 06:23:56,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56" (1/1) ... [2025-02-08 06:23:56,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56" (1/1) ... [2025-02-08 06:23:56,642 INFO L138 Inliner]: procedures = 188, calls = 67, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 211 [2025-02-08 06:23:56,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 06:23:56,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 06:23:56,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 06:23:56,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 06:23:56,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56" (1/1) ... [2025-02-08 06:23:56,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56" (1/1) ... [2025-02-08 06:23:56,655 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56" (1/1) ... [2025-02-08 06:23:56,679 INFO L175 MemorySlicer]: Split 39 memory accesses to 2 slices as follows [2, 37]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 19 writes are split as follows [0, 19]. [2025-02-08 06:23:56,679 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56" (1/1) ... [2025-02-08 06:23:56,680 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56" (1/1) ... [2025-02-08 06:23:56,691 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56" (1/1) ... [2025-02-08 06:23:56,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56" (1/1) ... [2025-02-08 06:23:56,694 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56" (1/1) ... [2025-02-08 06:23:56,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56" (1/1) ... [2025-02-08 06:23:56,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 06:23:56,697 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 06:23:56,698 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 06:23:56,698 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 06:23:56,698 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56" (1/1) ... [2025-02-08 06:23:56,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:23:56,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:56,727 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) [2025-02-08 06:23:56,732 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 [2025-02-08 06:23:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 06:23:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 06:23:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 06:23:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 06:23:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 06:23:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 06:23:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2025-02-08 06:23:56,749 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2025-02-08 06:23:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 06:23:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 06:23:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 06:23:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 06:23:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 06:23:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 06:23:56,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 06:23:56,891 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 06:23:56,892 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 06:23:57,012 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L642: havoc calloc_model_#t~memset~res4#1.base, calloc_model_#t~memset~res4#1.offset; [2025-02-08 06:23:57,476 INFO L? ?]: Removed 218 outVars from TransFormulas that were not future-live. [2025-02-08 06:23:57,477 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 06:23:57,492 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 06:23:57,494 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 06:23:57,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:23:57 BoogieIcfgContainer [2025-02-08 06:23:57,495 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 06:23:57,498 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 06:23:57,498 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 06:23:57,502 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 06:23:57,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 06:23:56" (1/3) ... [2025-02-08 06:23:57,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe05be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:23:57, skipping insertion in model container [2025-02-08 06:23:57,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:56" (2/3) ... [2025-02-08 06:23:57,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fe05be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:23:57, skipping insertion in model container [2025-02-08 06:23:57,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:23:57" (3/3) ... [2025-02-08 06:23:57,505 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0236.i [2025-02-08 06:23:57,518 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 06:23:57,521 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0236.i that has 2 procedures, 211 locations, 1 initial locations, 11 loop locations, and 89 error locations. [2025-02-08 06:23:57,565 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 06:23:57,577 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=None, 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;@3e6e8141, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 06:23:57,579 INFO L334 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2025-02-08 06:23:57,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 114 states have (on average 1.9736842105263157) internal successors, (225), 203 states have internal predecessors, (225), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:23:57,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 06:23:57,604 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:57,605 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 06:23:57,605 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:23:57,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:57,612 INFO L85 PathProgramCache]: Analyzing trace with hash 261015, now seen corresponding path program 1 times [2025-02-08 06:23:57,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:57,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101527380] [2025-02-08 06:23:57,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:57,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:57,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 06:23:57,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 06:23:57,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:57,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:23:57,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:57,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101527380] [2025-02-08 06:23:57,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101527380] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:23:57,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:23:57,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:23:57,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731180916] [2025-02-08 06:23:57,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:23:57,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 06:23:57,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:57,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 06:23:57,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 06:23:57,759 INFO L87 Difference]: Start difference. First operand has 211 states, 114 states have (on average 1.9736842105263157) internal successors, (225), 203 states have internal predecessors, (225), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:23:57,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:57,786 INFO L93 Difference]: Finished difference Result 211 states and 226 transitions. [2025-02-08 06:23:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 06:23:57,788 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-02-08 06:23:57,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:57,796 INFO L225 Difference]: With dead ends: 211 [2025-02-08 06:23:57,796 INFO L226 Difference]: Without dead ends: 209 [2025-02-08 06:23:57,798 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 [2025-02-08 06:23:57,801 INFO L435 NwaCegarLoop]: 226 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, 226 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 [2025-02-08 06:23:57,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:23:57,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2025-02-08 06:23:57,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2025-02-08 06:23:57,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 113 states have (on average 1.8761061946902655) internal successors, (212), 201 states have internal predecessors, (212), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:23:57,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 224 transitions. [2025-02-08 06:23:57,854 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 224 transitions. Word has length 3 [2025-02-08 06:23:57,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:57,854 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 224 transitions. [2025-02-08 06:23:57,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:23:57,855 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 224 transitions. [2025-02-08 06:23:57,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-08 06:23:57,856 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:57,856 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 06:23:57,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 06:23:57,856 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:23:57,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:57,858 INFO L85 PathProgramCache]: Analyzing trace with hash 250927125, now seen corresponding path program 1 times [2025-02-08 06:23:57,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:57,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701937651] [2025-02-08 06:23:57,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:57,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:57,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 06:23:57,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 06:23:57,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:57,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:23:58,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:58,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701937651] [2025-02-08 06:23:58,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701937651] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:23:58,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:23:58,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:23:58,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680492973] [2025-02-08 06:23:58,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:23:58,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:23:58,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:58,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:23:58,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:23:58,014 INFO L87 Difference]: Start difference. First operand 209 states and 224 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:23:58,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:58,177 INFO L93 Difference]: Finished difference Result 208 states and 223 transitions. [2025-02-08 06:23:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:23:58,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-08 06:23:58,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:58,179 INFO L225 Difference]: With dead ends: 208 [2025-02-08 06:23:58,179 INFO L226 Difference]: Without dead ends: 208 [2025-02-08 06:23:58,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:23:58,180 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 3 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:58,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 353 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:23:58,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-02-08 06:23:58,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2025-02-08 06:23:58,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 113 states have (on average 1.8672566371681416) internal successors, (211), 200 states have internal predecessors, (211), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:23:58,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 223 transitions. [2025-02-08 06:23:58,200 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 223 transitions. Word has length 5 [2025-02-08 06:23:58,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:58,200 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 223 transitions. [2025-02-08 06:23:58,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:23:58,200 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 223 transitions. [2025-02-08 06:23:58,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 06:23:58,201 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:58,201 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 06:23:58,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 06:23:58,201 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:23:58,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:58,202 INFO L85 PathProgramCache]: Analyzing trace with hash -811193738, now seen corresponding path program 1 times [2025-02-08 06:23:58,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:58,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284931525] [2025-02-08 06:23:58,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:58,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:58,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:23:58,228 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:23:58,228 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:58,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:23:58,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327782724] [2025-02-08 06:23:58,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:58,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:58,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:58,235 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) [2025-02-08 06:23:58,238 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 [2025-02-08 06:23:58,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:23:58,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:23:58,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:58,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:58,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 06:23:58,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:23:58,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2025-02-08 06:23:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:23:58,413 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:23:58,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:58,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284931525] [2025-02-08 06:23:58,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:23:58,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327782724] [2025-02-08 06:23:58,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327782724] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:23:58,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:23:58,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:23:58,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166498183] [2025-02-08 06:23:58,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:23:58,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:23:58,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:58,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:23:58,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:23:58,415 INFO L87 Difference]: Start difference. First operand 208 states and 223 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:23:58,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:58,578 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2025-02-08 06:23:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:23:58,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-08 06:23:58,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:58,580 INFO L225 Difference]: With dead ends: 216 [2025-02-08 06:23:58,580 INFO L226 Difference]: Without dead ends: 216 [2025-02-08 06:23:58,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:23:58,581 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 10 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:58,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 567 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:23:58,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2025-02-08 06:23:58,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2025-02-08 06:23:58,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 120 states have (on average 1.825) internal successors, (219), 207 states have internal predecessors, (219), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:23:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 231 transitions. [2025-02-08 06:23:58,597 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 231 transitions. Word has length 6 [2025-02-08 06:23:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:58,597 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 231 transitions. [2025-02-08 06:23:58,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:23:58,598 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 231 transitions. [2025-02-08 06:23:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-08 06:23:58,599 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:58,599 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:23:58,607 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 [2025-02-08 06:23:58,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:58,800 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:23:58,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:58,800 INFO L85 PathProgramCache]: Analyzing trace with hash 656860295, now seen corresponding path program 1 times [2025-02-08 06:23:58,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:58,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672542930] [2025-02-08 06:23:58,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:58,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:58,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 06:23:58,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 06:23:58,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:58,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:23:58,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642663861] [2025-02-08 06:23:58,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:58,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:58,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:58,905 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) [2025-02-08 06:23:58,933 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 [2025-02-08 06:23:59,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 06:23:59,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 06:23:59,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:59,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:59,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-08 06:23:59,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:23:59,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2025-02-08 06:23:59,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:23:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-02-08 06:23:59,316 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:23:59,546 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2025-02-08 06:23:59,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:59,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672542930] [2025-02-08 06:23:59,546 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:23:59,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642663861] [2025-02-08 06:23:59,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642663861] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-08 06:23:59,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 06:23:59,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2025-02-08 06:23:59,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774057283] [2025-02-08 06:23:59,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:23:59,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:23:59,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:59,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:23:59,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-02-08 06:23:59,548 INFO L87 Difference]: Start difference. First operand 216 states and 231 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 06:23:59,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:59,717 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2025-02-08 06:23:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:23:59,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2025-02-08 06:23:59,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:59,719 INFO L225 Difference]: With dead ends: 221 [2025-02-08 06:23:59,719 INFO L226 Difference]: Without dead ends: 217 [2025-02-08 06:23:59,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-02-08 06:23:59,720 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 12 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:59,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 363 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:23:59,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-02-08 06:23:59,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2025-02-08 06:23:59,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 121 states have (on average 1.8181818181818181) internal successors, (220), 208 states have internal predecessors, (220), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:23:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 232 transitions. [2025-02-08 06:23:59,735 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 232 transitions. Word has length 60 [2025-02-08 06:23:59,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:59,735 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 232 transitions. [2025-02-08 06:23:59,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 06:23:59,736 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 232 transitions. [2025-02-08 06:23:59,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-08 06:23:59,740 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:59,740 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:23:59,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 06:23:59,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:59,941 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:23:59,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:59,942 INFO L85 PathProgramCache]: Analyzing trace with hash 175966813, now seen corresponding path program 1 times [2025-02-08 06:23:59,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:59,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482812672] [2025-02-08 06:23:59,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:59,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:59,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-08 06:24:00,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 06:24:00,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:00,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:24:00,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020070696] [2025-02-08 06:24:00,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:00,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:00,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:00,188 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) [2025-02-08 06:24:00,191 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 [2025-02-08 06:24:00,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-08 06:24:00,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 06:24:00,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:00,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:00,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-02-08 06:24:00,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:00,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2025-02-08 06:24:00,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:24:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 82 proven. 17 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-08 06:24:00,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:00,865 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 45 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-08 06:24:00,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:00,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482812672] [2025-02-08 06:24:00,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:24:00,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020070696] [2025-02-08 06:24:00,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020070696] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:24:00,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:24:00,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2025-02-08 06:24:00,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518540638] [2025-02-08 06:24:00,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:00,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 06:24:00,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:00,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 06:24:00,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-02-08 06:24:00,867 INFO L87 Difference]: Start difference. First operand 217 states and 232 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-08 06:24:01,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:01,268 INFO L93 Difference]: Finished difference Result 234 states and 251 transitions. [2025-02-08 06:24:01,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 06:24:01,268 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2025-02-08 06:24:01,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:01,270 INFO L225 Difference]: With dead ends: 234 [2025-02-08 06:24:01,270 INFO L226 Difference]: Without dead ends: 222 [2025-02-08 06:24:01,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2025-02-08 06:24:01,271 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 22 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:01,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1430 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:24:01,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2025-02-08 06:24:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2025-02-08 06:24:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 126 states have (on average 1.7936507936507937) internal successors, (226), 213 states have internal predecessors, (226), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:01,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 238 transitions. [2025-02-08 06:24:01,279 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 238 transitions. Word has length 65 [2025-02-08 06:24:01,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:01,280 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 238 transitions. [2025-02-08 06:24:01,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-08 06:24:01,280 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 238 transitions. [2025-02-08 06:24:01,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-02-08 06:24:01,281 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:01,281 INFO L218 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:01,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 06:24:01,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:01,482 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:24:01,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:01,483 INFO L85 PathProgramCache]: Analyzing trace with hash -941261817, now seen corresponding path program 2 times [2025-02-08 06:24:01,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:01,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507467408] [2025-02-08 06:24:01,483 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:24:01,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:01,524 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-08 06:24:01,712 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-02-08 06:24:01,712 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:24:01,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:24:01,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994880195] [2025-02-08 06:24:01,725 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:24:01,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:01,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:01,728 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) [2025-02-08 06:24:01,731 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 [2025-02-08 06:24:01,864 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-08 06:24:02,130 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-02-08 06:24:02,130 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:24:02,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:02,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-02-08 06:24:02,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:02,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2025-02-08 06:24:02,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:24:02,339 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 131 proven. 10 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2025-02-08 06:24:02,339 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 15 proven. 134 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2025-02-08 06:24:02,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:02,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507467408] [2025-02-08 06:24:02,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:24:02,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994880195] [2025-02-08 06:24:02,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994880195] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:24:02,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:24:02,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2025-02-08 06:24:02,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277633725] [2025-02-08 06:24:02,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:02,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 06:24:02,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:02,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 06:24:02,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2025-02-08 06:24:02,736 INFO L87 Difference]: Start difference. First operand 222 states and 238 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-08 06:24:03,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:03,785 INFO L93 Difference]: Finished difference Result 243 states and 265 transitions. [2025-02-08 06:24:03,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 06:24:03,785 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2025-02-08 06:24:03,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:03,787 INFO L225 Difference]: With dead ends: 243 [2025-02-08 06:24:03,787 INFO L226 Difference]: Without dead ends: 231 [2025-02-08 06:24:03,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2025-02-08 06:24:03,789 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 33 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:03,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1567 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 06:24:03,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-02-08 06:24:03,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2025-02-08 06:24:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 135 states have (on average 1.7555555555555555) internal successors, (237), 222 states have internal predecessors, (237), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:03,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 249 transitions. [2025-02-08 06:24:03,797 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 249 transitions. Word has length 80 [2025-02-08 06:24:03,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:03,797 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 249 transitions. [2025-02-08 06:24:03,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-08 06:24:03,797 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 249 transitions. [2025-02-08 06:24:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-02-08 06:24:03,800 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:03,800 INFO L218 NwaCegarLoop]: trace histogram [50, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:03,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 06:24:04,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-08 06:24:04,001 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:24:04,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:04,002 INFO L85 PathProgramCache]: Analyzing trace with hash 367703879, now seen corresponding path program 3 times [2025-02-08 06:24:04,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:04,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493734853] [2025-02-08 06:24:04,002 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:24:04,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:04,070 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 110 statements into 21 equivalence classes. [2025-02-08 06:24:04,867 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) and asserted 110 of 110 statements. [2025-02-08 06:24:04,867 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2025-02-08 06:24:04,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:24:04,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104004672] [2025-02-08 06:24:04,882 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:24:04,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:04,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:04,885 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) [2025-02-08 06:24:04,887 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 [2025-02-08 06:24:05,070 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 110 statements into 21 equivalence classes. [2025-02-08 06:24:05,101 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 110 statements. [2025-02-08 06:24:05,101 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 06:24:05,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:05,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 06:24:05,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:05,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2025-02-08 06:24:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1570 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1555 trivial. 0 not checked. [2025-02-08 06:24:05,148 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:24:05,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:05,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493734853] [2025-02-08 06:24:05,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:24:05,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104004672] [2025-02-08 06:24:05,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104004672] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:24:05,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:24:05,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:24:05,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130301731] [2025-02-08 06:24:05,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:24:05,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:24:05,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:05,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:24:05,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:24:05,151 INFO L87 Difference]: Start difference. First operand 231 states and 249 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 06:24:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:05,276 INFO L93 Difference]: Finished difference Result 230 states and 248 transitions. [2025-02-08 06:24:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:24:05,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 110 [2025-02-08 06:24:05,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:05,278 INFO L225 Difference]: With dead ends: 230 [2025-02-08 06:24:05,278 INFO L226 Difference]: Without dead ends: 230 [2025-02-08 06:24:05,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:24:05,279 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 10 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:05,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 588 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:24:05,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2025-02-08 06:24:05,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2025-02-08 06:24:05,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 221 states have internal predecessors, (236), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 248 transitions. [2025-02-08 06:24:05,289 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 248 transitions. Word has length 110 [2025-02-08 06:24:05,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:05,291 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 248 transitions. [2025-02-08 06:24:05,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 06:24:05,291 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 248 transitions. [2025-02-08 06:24:05,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-02-08 06:24:05,294 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:05,294 INFO L218 NwaCegarLoop]: trace histogram [50, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:05,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 06:24:05,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:05,495 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:24:05,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:05,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1780171914, now seen corresponding path program 1 times [2025-02-08 06:24:05,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:05,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237203803] [2025-02-08 06:24:05,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:05,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:05,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-08 06:24:05,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-08 06:24:05,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:05,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 581 proven. 17 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2025-02-08 06:24:06,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:06,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237203803] [2025-02-08 06:24:06,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237203803] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:06,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23847696] [2025-02-08 06:24:06,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:06,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:06,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:06,805 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) [2025-02-08 06:24:06,806 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 [2025-02-08 06:24:07,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-08 06:24:07,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-08 06:24:07,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:07,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:07,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-08 06:24:07,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:07,270 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2025-02-08 06:24:07,302 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-08 06:24:07,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-02-08 06:24:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 581 proven. 1 refuted. 0 times theorem prover too weak. 1047 trivial. 16 not checked. [2025-02-08 06:24:07,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:07,528 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 06:24:07,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2025-02-08 06:24:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 581 proven. 17 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2025-02-08 06:24:07,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23847696] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:24:07,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:24:07,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 16 [2025-02-08 06:24:07,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218475561] [2025-02-08 06:24:07,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:07,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 06:24:07,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:07,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 06:24:07,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=198, Unknown=1, NotChecked=28, Total=272 [2025-02-08 06:24:07,554 INFO L87 Difference]: Start difference. First operand 230 states and 248 transitions. Second operand has 17 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 06:24:08,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:08,159 INFO L93 Difference]: Finished difference Result 226 states and 244 transitions. [2025-02-08 06:24:08,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:24:08,160 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 116 [2025-02-08 06:24:08,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:08,161 INFO L225 Difference]: With dead ends: 226 [2025-02-08 06:24:08,162 INFO L226 Difference]: Without dead ends: 226 [2025-02-08 06:24:08,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 224 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=310, Unknown=1, NotChecked=36, Total=420 [2025-02-08 06:24:08,163 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 19 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:08,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1452 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 892 Invalid, 0 Unknown, 212 Unchecked, 0.5s Time] [2025-02-08 06:24:08,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2025-02-08 06:24:08,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2025-02-08 06:24:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 135 states have (on average 1.7185185185185186) internal successors, (232), 217 states have internal predecessors, (232), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 244 transitions. [2025-02-08 06:24:08,169 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 244 transitions. Word has length 116 [2025-02-08 06:24:08,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:08,169 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 244 transitions. [2025-02-08 06:24:08,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 06:24:08,169 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 244 transitions. [2025-02-08 06:24:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-02-08 06:24:08,170 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:08,171 INFO L218 NwaCegarLoop]: trace histogram [50, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:08,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 06:24:08,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-08 06:24:08,371 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:24:08,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:08,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1780171913, now seen corresponding path program 1 times [2025-02-08 06:24:08,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:08,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648964476] [2025-02-08 06:24:08,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:08,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:08,433 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-08 06:24:08,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-08 06:24:08,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:08,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:24:08,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1854569492] [2025-02-08 06:24:08,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:08,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:08,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:08,621 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) [2025-02-08 06:24:08,623 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 [2025-02-08 06:24:08,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-08 06:24:10,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-08 06:24:10,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:10,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:10,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-02-08 06:24:10,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:10,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2025-02-08 06:24:10,559 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:24:10,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:24:10,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2025-02-08 06:24:10,605 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 06:24:10,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 06:24:10,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 581 proven. 0 refuted. 0 times theorem prover too weak. 1047 trivial. 17 not checked. [2025-02-08 06:24:10,624 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:10,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:10,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648964476] [2025-02-08 06:24:10,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:24:10,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854569492] [2025-02-08 06:24:10,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854569492] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:10,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 06:24:10,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-02-08 06:24:10,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526666856] [2025-02-08 06:24:10,736 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:10,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 06:24:10,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:10,737 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 06:24:10,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=153, Unknown=1, NotChecked=24, Total=210 [2025-02-08 06:24:10,738 INFO L87 Difference]: Start difference. First operand 226 states and 244 transitions. Second operand has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 06:24:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:11,543 INFO L93 Difference]: Finished difference Result 246 states and 264 transitions. [2025-02-08 06:24:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 06:24:11,544 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 116 [2025-02-08 06:24:11,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:11,545 INFO L225 Difference]: With dead ends: 246 [2025-02-08 06:24:11,545 INFO L226 Difference]: Without dead ends: 246 [2025-02-08 06:24:11,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=326, Unknown=1, NotChecked=36, Total=420 [2025-02-08 06:24:11,546 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 35 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 233 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:11,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 975 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1002 Invalid, 0 Unknown, 233 Unchecked, 0.6s Time] [2025-02-08 06:24:11,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2025-02-08 06:24:11,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 238. [2025-02-08 06:24:11,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 146 states have (on average 1.6917808219178083) internal successors, (247), 228 states have internal predecessors, (247), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 7 states have call predecessors, (7), 6 states have call successors, (7) [2025-02-08 06:24:11,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 260 transitions. [2025-02-08 06:24:11,553 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 260 transitions. Word has length 116 [2025-02-08 06:24:11,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:11,554 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 260 transitions. [2025-02-08 06:24:11,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 06:24:11,554 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 260 transitions. [2025-02-08 06:24:11,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-02-08 06:24:11,557 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:11,557 INFO L218 NwaCegarLoop]: trace histogram [52, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:11,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 06:24:11,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:11,757 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:24:11,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:11,758 INFO L85 PathProgramCache]: Analyzing trace with hash -195009801, now seen corresponding path program 2 times [2025-02-08 06:24:11,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:11,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802705220] [2025-02-08 06:24:11,758 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:24:11,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:11,811 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 118 statements into 2 equivalence classes. [2025-02-08 06:24:11,981 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 118 of 118 statements. [2025-02-08 06:24:11,981 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:24:11,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:24:11,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653771633] [2025-02-08 06:24:11,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:24:11,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:11,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:11,992 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) [2025-02-08 06:24:11,994 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 [2025-02-08 06:24:12,290 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 118 statements into 2 equivalence classes. [2025-02-08 06:24:13,850 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 118 of 118 statements. [2025-02-08 06:24:13,850 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:24:13,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:13,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-02-08 06:24:13,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:13,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2025-02-08 06:24:14,177 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| (select |c_#length| |zalloc_or_die_calloc_model_~ptr~0#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) 0))) is different from true [2025-02-08 06:24:14,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:24:14,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2025-02-08 06:24:14,245 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 06:24:14,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 06:24:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 669 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 39 not checked. [2025-02-08 06:24:14,261 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:14,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:14,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802705220] [2025-02-08 06:24:14,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:24:14,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653771633] [2025-02-08 06:24:14,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653771633] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:14,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-08 06:24:14,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-02-08 06:24:14,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027676698] [2025-02-08 06:24:14,378 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:14,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 06:24:14,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:14,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 06:24:14,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=153, Unknown=1, NotChecked=24, Total=210 [2025-02-08 06:24:14,379 INFO L87 Difference]: Start difference. First operand 238 states and 260 transitions. Second operand has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 06:24:15,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:15,145 INFO L93 Difference]: Finished difference Result 234 states and 256 transitions. [2025-02-08 06:24:15,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 06:24:15,146 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 118 [2025-02-08 06:24:15,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:15,147 INFO L225 Difference]: With dead ends: 234 [2025-02-08 06:24:15,147 INFO L226 Difference]: Without dead ends: 234 [2025-02-08 06:24:15,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=294, Unknown=1, NotChecked=34, Total=380 [2025-02-08 06:24:15,148 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 16 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 1387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:15,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1129 Invalid, 1387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1171 Invalid, 0 Unknown, 206 Unchecked, 0.6s Time] [2025-02-08 06:24:15,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2025-02-08 06:24:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 222. [2025-02-08 06:24:15,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 135 states have (on average 1.6888888888888889) internal successors, (228), 213 states have internal predecessors, (228), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:15,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 240 transitions. [2025-02-08 06:24:15,155 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 240 transitions. Word has length 118 [2025-02-08 06:24:15,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:15,155 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 240 transitions. [2025-02-08 06:24:15,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-08 06:24:15,156 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 240 transitions. [2025-02-08 06:24:15,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-02-08 06:24:15,157 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:15,157 INFO L218 NwaCegarLoop]: trace histogram [50, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:15,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 06:24:15,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:15,358 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:24:15,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:15,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1154857689, now seen corresponding path program 1 times [2025-02-08 06:24:15,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:15,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804076565] [2025-02-08 06:24:15,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:15,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:15,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-08 06:24:15,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-08 06:24:15,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:15,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2025-02-08 06:24:16,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:16,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804076565] [2025-02-08 06:24:16,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804076565] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:24:16,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:24:16,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 06:24:16,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209511661] [2025-02-08 06:24:16,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:24:16,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 06:24:16,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:16,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 06:24:16,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-08 06:24:16,148 INFO L87 Difference]: Start difference. First operand 222 states and 240 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-08 06:24:16,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:16,522 INFO L93 Difference]: Finished difference Result 221 states and 239 transitions. [2025-02-08 06:24:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:24:16,522 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 119 [2025-02-08 06:24:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:16,524 INFO L225 Difference]: With dead ends: 221 [2025-02-08 06:24:16,524 INFO L226 Difference]: Without dead ends: 221 [2025-02-08 06:24:16,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-08 06:24:16,524 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 10 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:16,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1042 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 06:24:16,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2025-02-08 06:24:16,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2025-02-08 06:24:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 135 states have (on average 1.6814814814814816) internal successors, (227), 212 states have internal predecessors, (227), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:24:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 239 transitions. [2025-02-08 06:24:16,532 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 239 transitions. Word has length 119 [2025-02-08 06:24:16,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:16,532 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 239 transitions. [2025-02-08 06:24:16,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-08 06:24:16,533 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 239 transitions. [2025-02-08 06:24:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-02-08 06:24:16,533 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:16,534 INFO L218 NwaCegarLoop]: trace histogram [50, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:16,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 06:24:16,534 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:24:16,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:16,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1154857690, now seen corresponding path program 1 times [2025-02-08 06:24:16,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:16,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681152256] [2025-02-08 06:24:16,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:16,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:16,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-08 06:24:16,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-08 06:24:16,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:16,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 581 proven. 72 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2025-02-08 06:24:19,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:19,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681152256] [2025-02-08 06:24:19,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681152256] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:19,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367613534] [2025-02-08 06:24:19,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:19,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:19,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:19,191 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) [2025-02-08 06:24:19,193 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 [2025-02-08 06:24:19,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-08 06:24:22,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-08 06:24:22,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:22,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:22,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 107 conjuncts are in the unsatisfiable core [2025-02-08 06:24:22,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:23,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2025-02-08 06:24:33,747 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:24:33,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:24:33,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2025-02-08 06:24:33,791 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 06:24:33,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 06:24:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1645 backedges. 381 proven. 873 refuted. 0 times theorem prover too weak. 355 trivial. 36 not checked. [2025-02-08 06:24:33,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:33,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367613534] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:33,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:24:33,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 33] total 53 [2025-02-08 06:24:33,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725044369] [2025-02-08 06:24:33,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:33,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-02-08 06:24:33,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:33,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-02-08 06:24:33,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2667, Unknown=2, NotChecked=104, Total=2970 [2025-02-08 06:24:33,997 INFO L87 Difference]: Start difference. First operand 221 states and 239 transitions. Second operand has 53 states, 51 states have (on average 1.6666666666666667) internal successors, (85), 48 states have internal predecessors, (85), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:24:38,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:24:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:42,262 INFO L93 Difference]: Finished difference Result 247 states and 279 transitions. [2025-02-08 06:24:42,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-08 06:24:42,262 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 51 states have (on average 1.6666666666666667) internal successors, (85), 48 states have internal predecessors, (85), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 119 [2025-02-08 06:24:42,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:42,265 INFO L225 Difference]: With dead ends: 247 [2025-02-08 06:24:42,265 INFO L226 Difference]: Without dead ends: 244 [2025-02-08 06:24:42,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=398, Invalid=5303, Unknown=3, NotChecked=148, Total=5852 [2025-02-08 06:24:42,267 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 28 mSDsluCounter, 4342 mSDsCounter, 0 mSdLazyCounter, 3374 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 4555 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3374 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 245 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:42,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 4555 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3374 Invalid, 1 Unknown, 245 Unchecked, 6.7s Time] [2025-02-08 06:24:42,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2025-02-08 06:24:42,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 226. [2025-02-08 06:24:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 139 states have (on average 1.669064748201439) internal successors, (232), 217 states have internal predecessors, (232), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2025-02-08 06:24:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 248 transitions. [2025-02-08 06:24:42,276 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 248 transitions. Word has length 119 [2025-02-08 06:24:42,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:42,276 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 248 transitions. [2025-02-08 06:24:42,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 51 states have (on average 1.6666666666666667) internal successors, (85), 48 states have internal predecessors, (85), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:24:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 248 transitions. [2025-02-08 06:24:42,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-02-08 06:24:42,277 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:42,277 INFO L218 NwaCegarLoop]: trace histogram [51, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:42,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 06:24:42,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:42,481 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:24:42,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:42,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1675882788, now seen corresponding path program 2 times [2025-02-08 06:24:42,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:42,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351975522] [2025-02-08 06:24:42,482 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:24:42,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:42,527 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 120 statements into 2 equivalence classes. [2025-02-08 06:24:42,635 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 120 of 120 statements. [2025-02-08 06:24:42,635 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:24:42,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1701 backedges. 625 proven. 84 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2025-02-08 06:24:45,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:45,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351975522] [2025-02-08 06:24:45,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351975522] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:45,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102372522] [2025-02-08 06:24:45,024 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:24:45,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:45,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:45,026 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:45,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 06:24:45,394 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 120 statements into 2 equivalence classes. [2025-02-08 06:24:48,625 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 120 of 120 statements. [2025-02-08 06:24:48,626 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:24:48,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:48,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 136 conjuncts are in the unsatisfiable core [2025-02-08 06:24:48,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:48,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2025-02-08 06:24:56,036 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-08 06:24:56,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2025-02-08 06:24:56,110 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 [2025-02-08 06:24:56,115 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 [2025-02-08 06:24:56,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-08 06:24:56,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-02-08 06:24:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1701 backedges. 593 proven. 799 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2025-02-08 06:24:56,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:56,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102372522] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:56,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:24:56,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 38] total 61 [2025-02-08 06:24:56,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567269285] [2025-02-08 06:24:56,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:56,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2025-02-08 06:24:56,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:56,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2025-02-08 06:24:56,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=3972, Unknown=1, NotChecked=0, Total=4160 [2025-02-08 06:24:56,611 INFO L87 Difference]: Start difference. First operand 226 states and 248 transitions. Second operand has 61 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 55 states have internal predecessors, (91), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:25:01,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:25:01,434 INFO L93 Difference]: Finished difference Result 249 states and 285 transitions. [2025-02-08 06:25:01,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-08 06:25:01,434 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 55 states have internal predecessors, (91), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 120 [2025-02-08 06:25:01,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:25:01,436 INFO L225 Difference]: With dead ends: 249 [2025-02-08 06:25:01,436 INFO L226 Difference]: Without dead ends: 246 [2025-02-08 06:25:01,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1736 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=408, Invalid=7601, Unknown=1, NotChecked=0, Total=8010 [2025-02-08 06:25:01,439 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 45 mSDsluCounter, 6036 mSDsCounter, 0 mSdLazyCounter, 4147 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6245 SdHoareTripleChecker+Invalid, 4162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 4147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-02-08 06:25:01,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6245 Invalid, 4162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 4147 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-02-08 06:25:01,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2025-02-08 06:25:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 227. [2025-02-08 06:25:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 140 states have (on average 1.6714285714285715) internal successors, (234), 218 states have internal predecessors, (234), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2025-02-08 06:25:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 250 transitions. [2025-02-08 06:25:01,449 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 250 transitions. Word has length 120 [2025-02-08 06:25:01,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:25:01,449 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 250 transitions. [2025-02-08 06:25:01,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 59 states have (on average 1.5423728813559323) internal successors, (91), 55 states have internal predecessors, (91), 3 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:25:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 250 transitions. [2025-02-08 06:25:01,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-02-08 06:25:01,451 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:25:01,451 INFO L218 NwaCegarLoop]: trace histogram [52, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:25:01,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-08 06:25:01,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-08 06:25:01,652 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:25:01,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:25:01,653 INFO L85 PathProgramCache]: Analyzing trace with hash 765475610, now seen corresponding path program 3 times [2025-02-08 06:25:01,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:25:01,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419822280] [2025-02-08 06:25:01,653 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:25:01,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:25:01,711 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 121 statements into 21 equivalence classes. [2025-02-08 06:25:02,152 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) and asserted 121 of 121 statements. [2025-02-08 06:25:02,152 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2025-02-08 06:25:02,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:25:02,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65548867] [2025-02-08 06:25:02,162 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:25:02,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:25:02,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:25:02,166 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:25:02,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 06:25:02,613 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 121 statements into 21 equivalence classes. [2025-02-08 06:25:02,645 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 25 of 121 statements. [2025-02-08 06:25:02,645 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 06:25:02,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:25:02,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 06:25:02,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:25:02,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2025-02-08 06:25:02,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-02-08 06:25:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1758 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 1671 trivial. 0 not checked. [2025-02-08 06:25:02,843 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:25:02,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:25:02,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419822280] [2025-02-08 06:25:02,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:25:02,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65548867] [2025-02-08 06:25:02,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65548867] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:25:02,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:25:02,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:25:02,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199607387] [2025-02-08 06:25:02,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:25:02,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:25:02,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:25:02,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:25:02,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:25:02,844 INFO L87 Difference]: Start difference. First operand 227 states and 250 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-08 06:25:04,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:25:04,158 INFO L93 Difference]: Finished difference Result 231 states and 253 transitions. [2025-02-08 06:25:04,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:25:04,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 121 [2025-02-08 06:25:04,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:25:04,160 INFO L225 Difference]: With dead ends: 231 [2025-02-08 06:25:04,160 INFO L226 Difference]: Without dead ends: 227 [2025-02-08 06:25:04,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:25:04,161 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 3 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:25:04,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 759 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-08 06:25:04,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2025-02-08 06:25:04,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2025-02-08 06:25:04,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 140 states have (on average 1.6642857142857144) internal successors, (233), 218 states have internal predecessors, (233), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2025-02-08 06:25:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 249 transitions. [2025-02-08 06:25:04,168 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 249 transitions. Word has length 121 [2025-02-08 06:25:04,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:25:04,169 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 249 transitions. [2025-02-08 06:25:04,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-08 06:25:04,169 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 249 transitions. [2025-02-08 06:25:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-02-08 06:25:04,171 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:25:04,171 INFO L218 NwaCegarLoop]: trace histogram [54, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:25:04,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 06:25:04,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-08 06:25:04,372 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:25:04,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:25:04,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1019892634, now seen corresponding path program 4 times [2025-02-08 06:25:04,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:25:04,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866021449] [2025-02-08 06:25:04,372 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:25:04,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:25:04,425 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 123 statements into 2 equivalence classes. [2025-02-08 06:25:04,672 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 123 of 123 statements. [2025-02-08 06:25:04,672 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:25:04,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:25:04,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028582764] [2025-02-08 06:25:04,682 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:25:04,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:25:04,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:25:04,685 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:25:04,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 06:25:05,127 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 123 statements into 2 equivalence classes. [2025-02-08 06:25:07,861 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 123 of 123 statements. [2025-02-08 06:25:07,861 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:25:07,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:25:07,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 97 conjuncts are in the unsatisfiable core [2025-02-08 06:25:07,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:25:07,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 7 [2025-02-08 06:25:08,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:25:08,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 1108 proven. 320 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2025-02-08 06:25:08,375 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:25:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 254 proven. 370 refuted. 0 times theorem prover too weak. 1251 trivial. 0 not checked. [2025-02-08 06:25:09,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:25:09,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866021449] [2025-02-08 06:25:09,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:25:09,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028582764] [2025-02-08 06:25:09,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028582764] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:25:09,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:25:09,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15] total 38 [2025-02-08 06:25:09,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113088347] [2025-02-08 06:25:09,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:25:09,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-02-08 06:25:09,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:25:09,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-02-08 06:25:09,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2025-02-08 06:25:09,036 INFO L87 Difference]: Start difference. First operand 227 states and 249 transitions. Second operand has 38 states, 38 states have (on average 2.0) internal successors, (76), 38 states have internal predecessors, (76), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-08 06:25:10,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:25:10,158 INFO L93 Difference]: Finished difference Result 241 states and 263 transitions. [2025-02-08 06:25:10,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-08 06:25:10,158 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0) internal successors, (76), 38 states have internal predecessors, (76), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 123 [2025-02-08 06:25:10,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:25:10,159 INFO L225 Difference]: With dead ends: 241 [2025-02-08 06:25:10,159 INFO L226 Difference]: Without dead ends: 229 [2025-02-08 06:25:10,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=600, Invalid=3182, Unknown=0, NotChecked=0, Total=3782 [2025-02-08 06:25:10,161 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 31 mSDsluCounter, 4584 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 4792 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:25:10,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 4792 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 06:25:10,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-02-08 06:25:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2025-02-08 06:25:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 143 states have (on average 1.6223776223776223) internal successors, (232), 220 states have internal predecessors, (232), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-08 06:25:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 244 transitions. [2025-02-08 06:25:10,168 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 244 transitions. Word has length 123 [2025-02-08 06:25:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:25:10,168 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 244 transitions. [2025-02-08 06:25:10,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.0) internal successors, (76), 38 states have internal predecessors, (76), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-08 06:25:10,168 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 244 transitions. [2025-02-08 06:25:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-02-08 06:25:10,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:25:10,170 INFO L218 NwaCegarLoop]: trace histogram [71, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:25:10,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 06:25:10,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:25:10,370 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 86 more)] === [2025-02-08 06:25:10,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:25:10,371 INFO L85 PathProgramCache]: Analyzing trace with hash 193797470, now seen corresponding path program 5 times [2025-02-08 06:25:10,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:25:10,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557731380] [2025-02-08 06:25:10,371 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:25:10,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:25:10,437 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 140 statements into 24 equivalence classes. [2025-02-08 06:25:11,381 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 140 of 140 statements. [2025-02-08 06:25:11,382 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-02-08 06:25:11,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat