./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0237.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0237.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 59c31190ccc8063bc9e40e87ef868627685497d396c28c826c00fa8abad7dfea --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:17:48,440 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:17:48,476 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 10:17:48,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:17:48,480 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:17:48,494 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:17:48,495 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:17:48,495 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:17:48,495 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:17:48,495 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:17:48,495 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:17:48,495 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:17:48,495 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:17:48,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:17:48,496 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:17:48,496 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:17:48,496 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:17:48,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:17:48,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:17:48,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:17:48,496 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:17:48,496 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:17:48,496 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:17:48,496 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:17:48,497 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:17:48,497 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:17:48,497 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:17:48,497 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:17:48,497 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:17:48,497 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:17:48,497 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:17:48,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:17:48,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:17:48,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:17:48,498 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:17:48,498 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:17:48,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:17:48,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:17:48,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:17:48,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:17:48,498 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:17:48,498 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:17:48,498 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 -> 59c31190ccc8063bc9e40e87ef868627685497d396c28c826c00fa8abad7dfea [2025-02-06 10:17:48,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:17:48,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:17:48,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:17:48,707 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:17:48,707 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:17:48,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0237.i [2025-02-06 10:17:49,943 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b5156f842/fded562c5e1e4b249a2591cb559ccd38/FLAG3fd1f2815 [2025-02-06 10:17:50,216 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:17:50,217 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety/test-0237.i [2025-02-06 10:17:50,229 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b5156f842/fded562c5e1e4b249a2591cb559ccd38/FLAG3fd1f2815 [2025-02-06 10:17:50,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b5156f842/fded562c5e1e4b249a2591cb559ccd38 [2025-02-06 10:17:50,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:17:50,523 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:17:50,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:17:50,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:17:50,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:17:50,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:17:50" (1/1) ... [2025-02-06 10:17:50,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4d701d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50, skipping insertion in model container [2025-02-06 10:17:50,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:17:50" (1/1) ... [2025-02-06 10:17:50,576 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:17:50,831 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-06 10:17:50,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:17:50,869 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:17:50,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:17:50,933 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:17:50,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50 WrapperNode [2025-02-06 10:17:50,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:17:50,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:17:50,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:17:50,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:17:50,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50" (1/1) ... [2025-02-06 10:17:50,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50" (1/1) ... [2025-02-06 10:17:50,976 INFO L138 Inliner]: procedures = 188, calls = 66, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 212 [2025-02-06 10:17:50,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:17:50,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:17:50,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:17:50,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:17:50,991 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50" (1/1) ... [2025-02-06 10:17:50,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50" (1/1) ... [2025-02-06 10:17:50,995 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50" (1/1) ... [2025-02-06 10:17:51,025 INFO L175 MemorySlicer]: Split 38 memory accesses to 3 slices as follows [2, 4, 32]. 84 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 18 writes are split as follows [0, 1, 17]. [2025-02-06 10:17:51,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50" (1/1) ... [2025-02-06 10:17:51,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50" (1/1) ... [2025-02-06 10:17:51,039 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50" (1/1) ... [2025-02-06 10:17:51,042 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50" (1/1) ... [2025-02-06 10:17:51,044 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50" (1/1) ... [2025-02-06 10:17:51,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50" (1/1) ... [2025-02-06 10:17:51,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:17:51,047 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:17:51,047 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:17:51,047 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:17:51,047 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50" (1/1) ... [2025-02-06 10:17:51,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:17:51,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:51,074 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) [2025-02-06 10:17:51,077 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 [2025-02-06 10:17:51,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 10:17:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 10:17:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 10:17:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 10:17:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 10:17:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 10:17:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 10:17:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 10:17:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2025-02-06 10:17:51,092 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2025-02-06 10:17:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:17:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-06 10:17:51,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-06 10:17:51,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-06 10:17:51,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 10:17:51,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 10:17:51,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 10:17:51,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:17:51,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:17:51,209 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:17:51,211 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:17:51,299 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L642: havoc calloc_model_#t~memset~res4#1.base, calloc_model_#t~memset~res4#1.offset; [2025-02-06 10:17:51,549 INFO L? ?]: Removed 225 outVars from TransFormulas that were not future-live. [2025-02-06 10:17:51,550 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:17:51,558 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:17:51,558 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:17:51,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:17:51 BoogieIcfgContainer [2025-02-06 10:17:51,559 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:17:51,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:17:51,560 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:17:51,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:17:51,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:17:50" (1/3) ... [2025-02-06 10:17:51,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588dffed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:17:51, skipping insertion in model container [2025-02-06 10:17:51,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:17:50" (2/3) ... [2025-02-06 10:17:51,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588dffed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:17:51, skipping insertion in model container [2025-02-06 10:17:51,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:17:51" (3/3) ... [2025-02-06 10:17:51,566 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0237.i [2025-02-06 10:17:51,575 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:17:51,576 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0237.i that has 2 procedures, 210 locations, 1 initial locations, 11 loop locations, and 87 error locations. [2025-02-06 10:17:51,601 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:17:51,621 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;@7f3e3725, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:17:51,621 INFO L334 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2025-02-06 10:17:51,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 210 states, 115 states have (on average 1.9478260869565218) internal successors, (224), 202 states have internal predecessors, (224), 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) [2025-02-06 10:17:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 10:17:51,628 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:51,628 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 10:17:51,629 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 84 more)] === [2025-02-06 10:17:51,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:51,633 INFO L85 PathProgramCache]: Analyzing trace with hash 8064274, now seen corresponding path program 1 times [2025-02-06 10:17:51,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:51,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481628867] [2025-02-06 10:17:51,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:51,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:51,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 10:17:51,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 10:17:51,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:51,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:51,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:17:51,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:51,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481628867] [2025-02-06 10:17:51,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481628867] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:17:51,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:17:51,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:17:51,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458490312] [2025-02-06 10:17:51,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:17:51,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 10:17:51,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:51,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 10:17:51,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 10:17:51,729 INFO L87 Difference]: Start difference. First operand has 210 states, 115 states have (on average 1.9478260869565218) internal successors, (224), 202 states have internal predecessors, (224), 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 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2025-02-06 10:17:51,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:51,744 INFO L93 Difference]: Finished difference Result 210 states and 225 transitions. [2025-02-06 10:17:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 10:17:51,745 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2025-02-06 10:17:51,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:51,750 INFO L225 Difference]: With dead ends: 210 [2025-02-06 10:17:51,750 INFO L226 Difference]: Without dead ends: 208 [2025-02-06 10:17:51,751 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 [2025-02-06 10:17:51,753 INFO L435 NwaCegarLoop]: 225 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, 225 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 [2025-02-06 10:17:51,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:17:51,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2025-02-06 10:17:51,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2025-02-06 10:17:51,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 114 states have (on average 1.8508771929824561) 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) [2025-02-06 10:17:51,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 223 transitions. [2025-02-06 10:17:51,780 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 223 transitions. Word has length 4 [2025-02-06 10:17:51,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:51,781 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 223 transitions. [2025-02-06 10:17:51,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2025-02-06 10:17:51,781 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 223 transitions. [2025-02-06 10:17:51,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 10:17:51,781 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:51,781 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 10:17:51,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 10:17:51,782 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 84 more)] === [2025-02-06 10:17:51,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:51,782 INFO L85 PathProgramCache]: Analyzing trace with hash -840077458, now seen corresponding path program 1 times [2025-02-06 10:17:51,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:51,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741002470] [2025-02-06 10:17:51,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:51,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:51,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 10:17:51,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 10:17:51,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:51,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:17:51,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:51,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741002470] [2025-02-06 10:17:51,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741002470] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:17:51,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:17:51,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:17:51,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377571011] [2025-02-06 10:17:51,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:17:51,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:17:51,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:51,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:17:51,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:17:51,861 INFO L87 Difference]: Start difference. First operand 208 states and 223 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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) [2025-02-06 10:17:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:51,978 INFO L93 Difference]: Finished difference Result 207 states and 222 transitions. [2025-02-06 10:17:51,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:17:51,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2025-02-06 10:17:51,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:51,983 INFO L225 Difference]: With dead ends: 207 [2025-02-06 10:17:51,983 INFO L226 Difference]: Without dead ends: 207 [2025-02-06 10:17:51,983 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 [2025-02-06 10:17:51,984 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 4 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:17:51,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 351 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:17:51,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2025-02-06 10:17:51,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2025-02-06 10:17:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 114 states have (on average 1.8421052631578947) internal successors, (210), 199 states have internal predecessors, (210), 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) [2025-02-06 10:17:51,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 222 transitions. [2025-02-06 10:17:51,992 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 222 transitions. Word has length 6 [2025-02-06 10:17:51,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:51,992 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 222 transitions. [2025-02-06 10:17:51,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2025-02-06 10:17:51,992 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 222 transitions. [2025-02-06 10:17:51,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 10:17:51,993 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:51,993 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:17:51,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 10:17:51,993 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 84 more)] === [2025-02-06 10:17:51,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:51,993 INFO L85 PathProgramCache]: Analyzing trace with hash -272597442, now seen corresponding path program 1 times [2025-02-06 10:17:51,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:51,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858787824] [2025-02-06 10:17:51,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:51,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:52,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 10:17:52,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 10:17:52,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:52,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 10:17:52,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [5144126] [2025-02-06 10:17:52,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:52,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:17:52,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:52,035 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) [2025-02-06 10:17:52,037 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 [2025-02-06 10:17:52,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 10:17:52,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 10:17:52,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:52,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:52,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:17:52,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:17:52,156 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 [2025-02-06 10:17:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:17:52,176 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:17:52,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:52,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858787824] [2025-02-06 10:17:52,177 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 10:17:52,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5144126] [2025-02-06 10:17:52,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5144126] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:17:52,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:17:52,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:17:52,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432812784] [2025-02-06 10:17:52,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:17:52,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:17:52,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:52,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:17:52,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:17:52,179 INFO L87 Difference]: Start difference. First operand 207 states and 222 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-02-06 10:17:52,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:52,289 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2025-02-06 10:17:52,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:17:52,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2025-02-06 10:17:52,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:52,291 INFO L225 Difference]: With dead ends: 216 [2025-02-06 10:17:52,291 INFO L226 Difference]: Without dead ends: 216 [2025-02-06 10:17:52,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:17:52,292 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 11 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:17:52,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 577 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:17:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2025-02-06 10:17:52,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2025-02-06 10:17:52,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 122 states have (on average 1.7950819672131149) 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) [2025-02-06 10:17:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 231 transitions. [2025-02-06 10:17:52,301 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 231 transitions. Word has length 7 [2025-02-06 10:17:52,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:52,301 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 231 transitions. [2025-02-06 10:17:52,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2025-02-06 10:17:52,301 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 231 transitions. [2025-02-06 10:17:52,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-06 10:17:52,302 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:52,302 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:17:52,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 10:17:52,506 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 [2025-02-06 10:17:52,506 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 84 more)] === [2025-02-06 10:17:52,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:52,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1513407145, now seen corresponding path program 1 times [2025-02-06 10:17:52,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:52,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536032740] [2025-02-06 10:17:52,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:52,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:52,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 10:17:52,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 10:17:52,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:52,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 10:17:52,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283929162] [2025-02-06 10:17:52,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:52,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:17:52,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:52,535 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) [2025-02-06 10:17:52,536 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 [2025-02-06 10:17:52,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 10:17:52,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 10:17:52,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:52,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:52,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:17:52,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:17:52,650 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 [2025-02-06 10:17:52,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:17:52,666 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:17:52,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:52,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536032740] [2025-02-06 10:17:52,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 10:17:52,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283929162] [2025-02-06 10:17:52,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283929162] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:17:52,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:17:52,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:17:52,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693341804] [2025-02-06 10:17:52,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:17:52,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:17:52,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:52,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:17:52,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:17:52,668 INFO L87 Difference]: Start difference. First operand 216 states and 231 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:17:52,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:52,780 INFO L93 Difference]: Finished difference Result 225 states and 240 transitions. [2025-02-06 10:17:52,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:17:52,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2025-02-06 10:17:52,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:52,782 INFO L225 Difference]: With dead ends: 225 [2025-02-06 10:17:52,782 INFO L226 Difference]: Without dead ends: 225 [2025-02-06 10:17:52,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:17:52,783 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 11 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:17:52,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 580 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:17:52,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-02-06 10:17:52,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2025-02-06 10:17:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 130 states have (on average 1.7538461538461538) internal successors, (228), 215 states have internal predecessors, (228), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 10:17:52,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 240 transitions. [2025-02-06 10:17:52,789 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 240 transitions. Word has length 19 [2025-02-06 10:17:52,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:52,790 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 240 transitions. [2025-02-06 10:17:52,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:17:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 240 transitions. [2025-02-06 10:17:52,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-06 10:17:52,791 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:52,791 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, 1] [2025-02-06 10:17:52,798 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 [2025-02-06 10:17:52,995 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 [2025-02-06 10:17:52,995 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 84 more)] === [2025-02-06 10:17:52,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:52,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2115524612, now seen corresponding path program 1 times [2025-02-06 10:17:52,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:52,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718982524] [2025-02-06 10:17:52,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:52,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:53,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-06 10:17:53,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-06 10:17:53,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:53,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 10:17:53,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638653368] [2025-02-06 10:17:53,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:53,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:17:53,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:53,058 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) [2025-02-06 10:17:53,059 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 [2025-02-06 10:17:53,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-06 10:17:53,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-06 10:17:53,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:53,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:53,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-02-06 10:17:53,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:17:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-06 10:17:53,249 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:17:53,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:53,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718982524] [2025-02-06 10:17:53,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 10:17:53,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638653368] [2025-02-06 10:17:53,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638653368] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:17:53,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:17:53,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:17:53,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053587785] [2025-02-06 10:17:53,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:17:53,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:17:53,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:53,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:17:53,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:17:53,250 INFO L87 Difference]: Start difference. First operand 225 states and 240 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 10:17:53,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:53,286 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2025-02-06 10:17:53,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:17:53,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2025-02-06 10:17:53,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:53,288 INFO L225 Difference]: With dead ends: 243 [2025-02-06 10:17:53,288 INFO L226 Difference]: Without dead ends: 228 [2025-02-06 10:17:53,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:17:53,289 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 2 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:17:53,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 848 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:17:53,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-02-06 10:17:53,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2025-02-06 10:17:53,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 133 states have (on average 1.736842105263158) internal successors, (231), 218 states have internal predecessors, (231), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 10:17:53,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 243 transitions. [2025-02-06 10:17:53,294 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 243 transitions. Word has length 66 [2025-02-06 10:17:53,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:53,294 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 243 transitions. [2025-02-06 10:17:53,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 10:17:53,294 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 243 transitions. [2025-02-06 10:17:53,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-02-06 10:17:53,295 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:53,295 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 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, 1] [2025-02-06 10:17:53,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 10:17:53,496 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 [2025-02-06 10:17:53,496 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 84 more)] === [2025-02-06 10:17:53,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:53,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1414728014, now seen corresponding path program 1 times [2025-02-06 10:17:53,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:53,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720999989] [2025-02-06 10:17:53,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:53,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:53,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-02-06 10:17:53,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-02-06 10:17:53,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:53,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 10:17:53,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118230598] [2025-02-06 10:17:53,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:53,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:17:53,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:53,631 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) [2025-02-06 10:17:53,632 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 [2025-02-06 10:17:53,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-02-06 10:17:53,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-02-06 10:17:53,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:53,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:53,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-02-06 10:17:53,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:17:53,840 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 [2025-02-06 10:17:53,865 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 [2025-02-06 10:17:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 92 proven. 13 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:17:53,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:17:54,108 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 48 proven. 12 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-02-06 10:17:54,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:54,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720999989] [2025-02-06 10:17:54,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 10:17:54,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118230598] [2025-02-06 10:17:54,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118230598] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:17:54,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:17:54,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2025-02-06 10:17:54,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829164474] [2025-02-06 10:17:54,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:17:54,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:17:54,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:54,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:17:54,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:17:54,110 INFO L87 Difference]: Start difference. First operand 228 states and 243 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 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) [2025-02-06 10:17:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:54,381 INFO L93 Difference]: Finished difference Result 253 states and 269 transitions. [2025-02-06 10:17:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:17:54,381 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 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 71 [2025-02-06 10:17:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:54,382 INFO L225 Difference]: With dead ends: 253 [2025-02-06 10:17:54,382 INFO L226 Difference]: Without dead ends: 233 [2025-02-06 10:17:54,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2025-02-06 10:17:54,383 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 28 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:17:54,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1204 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:17:54,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2025-02-06 10:17:54,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2025-02-06 10:17:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 138 states have (on average 1.710144927536232) internal successors, (236), 223 states have internal predecessors, (236), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 10:17:54,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 248 transitions. [2025-02-06 10:17:54,388 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 248 transitions. Word has length 71 [2025-02-06 10:17:54,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:54,389 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 248 transitions. [2025-02-06 10:17:54,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 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) [2025-02-06 10:17:54,389 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 248 transitions. [2025-02-06 10:17:54,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-02-06 10:17:54,390 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:54,390 INFO L218 NwaCegarLoop]: trace histogram [18, 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, 1] [2025-02-06 10:17:54,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 10:17:54,595 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 [2025-02-06 10:17:54,595 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 84 more)] === [2025-02-06 10:17:54,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1927747268, now seen corresponding path program 2 times [2025-02-06 10:17:54,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:54,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252771742] [2025-02-06 10:17:54,596 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:17:54,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:54,622 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 84 statements into 2 equivalence classes. [2025-02-06 10:17:54,825 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 84 of 84 statements. [2025-02-06 10:17:54,825 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:17:54,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 10:17:54,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609112300] [2025-02-06 10:17:54,836 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:17:54,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:17:54,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:54,838 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) [2025-02-06 10:17:54,842 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 [2025-02-06 10:17:54,946 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 84 statements into 2 equivalence classes. [2025-02-06 10:17:55,104 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 84 of 84 statements. [2025-02-06 10:17:55,105 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:17:55,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:55,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 10:17:55,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:17:55,145 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 [2025-02-06 10:17:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2025-02-06 10:17:55,157 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:17:55,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:55,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252771742] [2025-02-06 10:17:55,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 10:17:55,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609112300] [2025-02-06 10:17:55,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609112300] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:17:55,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:17:55,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:17:55,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566962950] [2025-02-06 10:17:55,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:17:55,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:17:55,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:55,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:17:55,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:17:55,160 INFO L87 Difference]: Start difference. First operand 233 states and 248 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2025-02-06 10:17:55,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:55,256 INFO L93 Difference]: Finished difference Result 232 states and 247 transitions. [2025-02-06 10:17:55,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:17:55,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 84 [2025-02-06 10:17:55,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:55,258 INFO L225 Difference]: With dead ends: 232 [2025-02-06 10:17:55,258 INFO L226 Difference]: Without dead ends: 232 [2025-02-06 10:17:55,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:17:55,258 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 11 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 587 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 [2025-02-06 10:17:55,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 587 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:17:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2025-02-06 10:17:55,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2025-02-06 10:17:55,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 138 states have (on average 1.7028985507246377) internal successors, (235), 222 states have internal predecessors, (235), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 10:17:55,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 247 transitions. [2025-02-06 10:17:55,267 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 247 transitions. Word has length 84 [2025-02-06 10:17:55,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:55,268 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 247 transitions. [2025-02-06 10:17:55,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2025-02-06 10:17:55,268 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 247 transitions. [2025-02-06 10:17:55,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-06 10:17:55,272 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:55,273 INFO L218 NwaCegarLoop]: trace histogram [20, 6, 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] [2025-02-06 10:17:55,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 10:17:55,473 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 [2025-02-06 10:17:55,474 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-06 10:17:55,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:55,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1673899586, now seen corresponding path program 1 times [2025-02-06 10:17:55,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:55,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048983418] [2025-02-06 10:17:55,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:55,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:55,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-06 10:17:55,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 10:17:55,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:55,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:56,227 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 205 proven. 22 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2025-02-06 10:17:56,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:56,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048983418] [2025-02-06 10:17:56,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048983418] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:17:56,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560804162] [2025-02-06 10:17:56,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:56,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:17:56,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:56,233 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) [2025-02-06 10:17:56,234 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 [2025-02-06 10:17:56,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-06 10:17:56,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 10:17:56,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:56,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:56,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 10:17:56,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:17:56,487 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 [2025-02-06 10:17:56,526 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-06 10:17:56,527 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 [2025-02-06 10:17:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 205 proven. 1 refuted. 0 times theorem prover too weak. 218 trivial. 21 not checked. [2025-02-06 10:17:56,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:17:56,703 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 10:17:56,704 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 [2025-02-06 10:17:56,718 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 205 proven. 22 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2025-02-06 10:17:56,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560804162] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:17:56,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:17:56,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 16 [2025-02-06 10:17:56,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169157980] [2025-02-06 10:17:56,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:17:56,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 10:17:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:56,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 10:17:56,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=198, Unknown=1, NotChecked=28, Total=272 [2025-02-06 10:17:56,719 INFO L87 Difference]: Start difference. First operand 232 states and 247 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 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) [2025-02-06 10:17:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:57,111 INFO L93 Difference]: Finished difference Result 228 states and 243 transitions. [2025-02-06 10:17:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:17:57,112 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 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 93 [2025-02-06 10:17:57,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:57,113 INFO L225 Difference]: With dead ends: 228 [2025-02-06 10:17:57,113 INFO L226 Difference]: Without dead ends: 228 [2025-02-06 10:17:57,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 178 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=310, Unknown=1, NotChecked=36, Total=420 [2025-02-06 10:17:57,114 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 19 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 209 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:17:57,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1217 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 698 Invalid, 0 Unknown, 209 Unchecked, 0.3s Time] [2025-02-06 10:17:57,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-02-06 10:17:57,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2025-02-06 10:17:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 138 states have (on average 1.673913043478261) internal successors, (231), 218 states have internal predecessors, (231), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 10:17:57,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 243 transitions. [2025-02-06 10:17:57,117 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 243 transitions. Word has length 93 [2025-02-06 10:17:57,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:57,118 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 243 transitions. [2025-02-06 10:17:57,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 15 states have internal predecessors, (63), 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) [2025-02-06 10:17:57,118 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 243 transitions. [2025-02-06 10:17:57,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-06 10:17:57,119 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:57,119 INFO L218 NwaCegarLoop]: trace histogram [20, 6, 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] [2025-02-06 10:17:57,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 10:17:57,319 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 [2025-02-06 10:17:57,319 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-06 10:17:57,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:57,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1673899585, now seen corresponding path program 1 times [2025-02-06 10:17:57,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:57,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950774091] [2025-02-06 10:17:57,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:57,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:57,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-06 10:17:57,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 10:17:57,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:57,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 10:17:57,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120719832] [2025-02-06 10:17:57,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:57,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:17:57,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:17:57,428 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) [2025-02-06 10:17:57,432 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 [2025-02-06 10:17:57,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-06 10:17:57,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 10:17:57,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:57,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:57,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-02-06 10:17:57,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:17:57,906 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 [2025-02-06 10:17:58,127 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 [2025-02-06 10:17:58,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:17:58,169 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 [2025-02-06 10:17:58,175 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:17:58,175 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 [2025-02-06 10:17:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 22 not checked. [2025-02-06 10:17:58,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:17:58,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:58,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950774091] [2025-02-06 10:17:58,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 10:17:58,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120719832] [2025-02-06 10:17:58,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120719832] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:17:58,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:17:58,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-02-06 10:17:58,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766053961] [2025-02-06 10:17:58,281 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 10:17:58,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:17:58,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:58,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:17:58,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=153, Unknown=1, NotChecked=24, Total=210 [2025-02-06 10:17:58,282 INFO L87 Difference]: Start difference. First operand 228 states and 243 transitions. Second operand has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 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) [2025-02-06 10:17:58,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:58,974 INFO L93 Difference]: Finished difference Result 224 states and 239 transitions. [2025-02-06 10:17:58,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:17:58,974 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 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 93 [2025-02-06 10:17:58,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:58,975 INFO L225 Difference]: With dead ends: 224 [2025-02-06 10:17:58,975 INFO L226 Difference]: Without dead ends: 224 [2025-02-06 10:17:58,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=328, Unknown=1, NotChecked=36, Total=420 [2025-02-06 10:17:58,976 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 18 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 10:17:58,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1041 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1038 Invalid, 0 Unknown, 204 Unchecked, 0.5s Time] [2025-02-06 10:17:58,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2025-02-06 10:17:58,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2025-02-06 10:17:58,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 138 states have (on average 1.644927536231884) internal successors, (227), 214 states have internal predecessors, (227), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 10:17:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 239 transitions. [2025-02-06 10:17:58,980 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 239 transitions. Word has length 93 [2025-02-06 10:17:58,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:58,980 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 239 transitions. [2025-02-06 10:17:58,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 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) [2025-02-06 10:17:58,980 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 239 transitions. [2025-02-06 10:17:58,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-02-06 10:17:58,981 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:58,981 INFO L218 NwaCegarLoop]: trace histogram [20, 6, 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, 1] [2025-02-06 10:17:58,992 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 [2025-02-06 10:17:59,185 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 [2025-02-06 10:17:59,185 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-06 10:17:59,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:59,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1722881999, now seen corresponding path program 1 times [2025-02-06 10:17:59,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:59,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370584908] [2025-02-06 10:17:59,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:59,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:59,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-02-06 10:17:59,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-02-06 10:17:59,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:17:59,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:17:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2025-02-06 10:17:59,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:17:59,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370584908] [2025-02-06 10:17:59,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370584908] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:17:59,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:17:59,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 10:17:59,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251055150] [2025-02-06 10:17:59,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:17:59,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:17:59,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:17:59,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:17:59,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:17:59,606 INFO L87 Difference]: Start difference. First operand 224 states and 239 transitions. Second operand has 9 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2025-02-06 10:17:59,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:17:59,915 INFO L93 Difference]: Finished difference Result 223 states and 238 transitions. [2025-02-06 10:17:59,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:17:59,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 96 [2025-02-06 10:17:59,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:17:59,916 INFO L225 Difference]: With dead ends: 223 [2025-02-06 10:17:59,916 INFO L226 Difference]: Without dead ends: 223 [2025-02-06 10:17:59,917 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 [2025-02-06 10:17:59,917 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 9 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:17:59,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1040 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:17:59,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-02-06 10:17:59,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2025-02-06 10:17:59,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 138 states have (on average 1.6376811594202898) internal successors, (226), 213 states have internal predecessors, (226), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 10:17:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 238 transitions. [2025-02-06 10:17:59,923 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 238 transitions. Word has length 96 [2025-02-06 10:17:59,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:17:59,923 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 238 transitions. [2025-02-06 10:17:59,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2025-02-06 10:17:59,923 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 238 transitions. [2025-02-06 10:17:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-02-06 10:17:59,923 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:17:59,924 INFO L218 NwaCegarLoop]: trace histogram [20, 6, 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, 1] [2025-02-06 10:17:59,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 10:17:59,924 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-06 10:17:59,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:17:59,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1722882000, now seen corresponding path program 1 times [2025-02-06 10:17:59,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:17:59,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530459385] [2025-02-06 10:17:59,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:17:59,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:17:59,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-02-06 10:18:00,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-02-06 10:18:00,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:18:00,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:18:01,309 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 205 proven. 32 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-02-06 10:18:01,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:18:01,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530459385] [2025-02-06 10:18:01,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530459385] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:18:01,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236300001] [2025-02-06 10:18:01,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:18:01,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:18:01,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:18:01,312 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) [2025-02-06 10:18:01,315 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 [2025-02-06 10:18:01,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-02-06 10:18:01,682 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-02-06 10:18:01,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:18:01,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:18:01,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 77 conjuncts are in the unsatisfiable core [2025-02-06 10:18:01,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:18:02,110 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 [2025-02-06 10:18:08,250 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 [2025-02-06 10:18:08,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:18:08,333 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 [2025-02-06 10:18:08,344 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:18:08,345 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 [2025-02-06 10:18:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 161 proven. 142 refuted. 0 times theorem prover too weak. 92 trivial. 50 not checked. [2025-02-06 10:18:08,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:18:08,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236300001] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:18:08,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:18:08,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 28] total 43 [2025-02-06 10:18:08,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029883015] [2025-02-06 10:18:08,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:18:08,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-06 10:18:08,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:18:08,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-06 10:18:08,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1753, Unknown=2, NotChecked=84, Total=1980 [2025-02-06 10:18:08,533 INFO L87 Difference]: Start difference. First operand 223 states and 238 transitions. Second operand has 43 states, 41 states have (on average 2.073170731707317) internal successors, (85), 37 states have internal predecessors, (85), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-06 10:18:12,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-06 10:18:14,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:18:14,745 INFO L93 Difference]: Finished difference Result 258 states and 285 transitions. [2025-02-06 10:18:14,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-06 10:18:14,746 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 2.073170731707317) internal successors, (85), 37 states have internal predecessors, (85), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) Word has length 96 [2025-02-06 10:18:14,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:18:14,753 INFO L225 Difference]: With dead ends: 258 [2025-02-06 10:18:14,754 INFO L226 Difference]: Without dead ends: 255 [2025-02-06 10:18:14,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=314, Invalid=3848, Unknown=2, NotChecked=126, Total=4290 [2025-02-06 10:18:14,755 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 97 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:18:14,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 2978 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1443 Invalid, 1 Unknown, 216 Unchecked, 5.2s Time] [2025-02-06 10:18:14,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2025-02-06 10:18:14,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 229. [2025-02-06 10:18:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 143 states have (on average 1.6223776223776223) internal successors, (232), 219 states have internal predecessors, (232), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-06 10:18:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 247 transitions. [2025-02-06 10:18:14,764 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 247 transitions. Word has length 96 [2025-02-06 10:18:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:18:14,765 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 247 transitions. [2025-02-06 10:18:14,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 2.073170731707317) internal successors, (85), 37 states have internal predecessors, (85), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-06 10:18:14,765 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 247 transitions. [2025-02-06 10:18:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-06 10:18:14,765 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:18:14,765 INFO L218 NwaCegarLoop]: trace histogram [21, 6, 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, 1] [2025-02-06 10:18:14,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 10:18:14,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:18:14,967 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-06 10:18:14,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:18:14,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1885410134, now seen corresponding path program 2 times [2025-02-06 10:18:14,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:18:14,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244991078] [2025-02-06 10:18:14,967 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:18:14,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:18:14,993 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-02-06 10:18:15,054 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-02-06 10:18:15,055 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:18:15,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:18:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 223 proven. 40 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-02-06 10:18:16,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:18:16,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244991078] [2025-02-06 10:18:16,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244991078] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:18:16,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172066482] [2025-02-06 10:18:16,256 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:18:16,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:18:16,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:18:16,261 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) [2025-02-06 10:18:16,264 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 [2025-02-06 10:18:16,426 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-02-06 10:18:16,761 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-02-06 10:18:16,761 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:18:16,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:18:16,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-02-06 10:18:16,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:18:17,039 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 [2025-02-06 10:18:19,578 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_zalloc_or_die_calloc_model_~size#1_154| Int) (|v_zalloc_or_die_calloc_model_~nmemb#1_154| Int)) (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| (* |v_zalloc_or_die_calloc_model_~size#1_154| |v_zalloc_or_die_calloc_model_~nmemb#1_154|))) (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 [2025-02-06 10:18:19,762 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 [2025-02-06 10:18:19,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:18:19,779 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 [2025-02-06 10:18:19,784 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:18:19,785 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 [2025-02-06 10:18:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 158 proven. 223 refuted. 0 times theorem prover too weak. 76 trivial. 14 not checked. [2025-02-06 10:18:19,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:18:19,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172066482] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:18:19,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:18:19,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 36] total 52 [2025-02-06 10:18:19,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918912497] [2025-02-06 10:18:19,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:18:19,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-02-06 10:18:19,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:18:19,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-02-06 10:18:19,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2483, Unknown=2, NotChecked=202, Total=2862 [2025-02-06 10:18:19,961 INFO L87 Difference]: Start difference. First operand 229 states and 247 transitions. Second operand has 52 states, 50 states have (on average 1.8) internal successors, (90), 46 states have internal predecessors, (90), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-06 10:18:24,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-06 10:18:27,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:18:27,681 INFO L93 Difference]: Finished difference Result 276 states and 309 transitions. [2025-02-06 10:18:27,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-06 10:18:27,682 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 1.8) internal successors, (90), 46 states have internal predecessors, (90), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) Word has length 97 [2025-02-06 10:18:27,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:18:27,683 INFO L225 Difference]: With dead ends: 276 [2025-02-06 10:18:27,683 INFO L226 Difference]: Without dead ends: 273 [2025-02-06 10:18:27,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=398, Invalid=5614, Unknown=2, NotChecked=306, Total=6320 [2025-02-06 10:18:27,684 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 98 mSDsluCounter, 4070 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 4272 SdHoareTripleChecker+Invalid, 2818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 499 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:18:27,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 4272 Invalid, 2818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2306 Invalid, 1 Unknown, 499 Unchecked, 6.0s Time] [2025-02-06 10:18:27,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2025-02-06 10:18:27,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 230. [2025-02-06 10:18:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 144 states have (on average 1.625) internal successors, (234), 220 states have internal predecessors, (234), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-06 10:18:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 249 transitions. [2025-02-06 10:18:27,690 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 249 transitions. Word has length 97 [2025-02-06 10:18:27,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:18:27,690 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 249 transitions. [2025-02-06 10:18:27,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 1.8) internal successors, (90), 46 states have internal predecessors, (90), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-06 10:18:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 249 transitions. [2025-02-06 10:18:27,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-06 10:18:27,691 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:18:27,691 INFO L218 NwaCegarLoop]: trace histogram [22, 6, 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, 1] [2025-02-06 10:18:27,702 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 [2025-02-06 10:18:27,895 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 [2025-02-06 10:18:27,895 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-06 10:18:27,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:18:27,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2073316592, now seen corresponding path program 3 times [2025-02-06 10:18:27,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:18:27,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556028392] [2025-02-06 10:18:27,895 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:18:27,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:18:27,918 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 98 statements into 10 equivalence classes. [2025-02-06 10:18:27,949 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 66 of 98 statements. [2025-02-06 10:18:27,949 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-06 10:18:27,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:18:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 241 proven. 49 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-02-06 10:18:28,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:18:28,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556028392] [2025-02-06 10:18:28,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556028392] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:18:28,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369583609] [2025-02-06 10:18:28,708 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:18:28,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:18:28,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:18:28,710 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) [2025-02-06 10:18:28,711 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 [2025-02-06 10:18:28,873 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 98 statements into 10 equivalence classes. [2025-02-06 10:18:28,904 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 30 of 98 statements. [2025-02-06 10:18:28,905 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:18:28,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:18:28,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-02-06 10:18:28,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:18:28,925 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 [2025-02-06 10:18:29,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 10:18:29,500 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 19 treesize of output 1 [2025-02-06 10:18:29,576 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 38 treesize of output 20 [2025-02-06 10:18:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2025-02-06 10:18:29,632 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:18:29,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369583609] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:18:29,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:18:29,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 28 [2025-02-06 10:18:29,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648452341] [2025-02-06 10:18:29,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:18:29,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 10:18:29,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:18:29,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 10:18:29,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2025-02-06 10:18:29,633 INFO L87 Difference]: Start difference. First operand 230 states and 249 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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) [2025-02-06 10:18:30,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:18:30,195 INFO L93 Difference]: Finished difference Result 229 states and 248 transitions. [2025-02-06 10:18:30,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:18:30,195 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 98 [2025-02-06 10:18:30,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:18:30,196 INFO L225 Difference]: With dead ends: 229 [2025-02-06 10:18:30,196 INFO L226 Difference]: Without dead ends: 229 [2025-02-06 10:18:30,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2025-02-06 10:18:30,201 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 3 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 10:18:30,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1234 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 10:18:30,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2025-02-06 10:18:30,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2025-02-06 10:18:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 144 states have (on average 1.6180555555555556) internal successors, (233), 219 states have internal predecessors, (233), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-06 10:18:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 248 transitions. [2025-02-06 10:18:30,210 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 248 transitions. Word has length 98 [2025-02-06 10:18:30,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:18:30,210 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 248 transitions. [2025-02-06 10:18:30,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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) [2025-02-06 10:18:30,210 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 248 transitions. [2025-02-06 10:18:30,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-06 10:18:30,210 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:18:30,210 INFO L218 NwaCegarLoop]: trace histogram [22, 6, 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, 1, 1, 1, 1] [2025-02-06 10:18:30,222 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 [2025-02-06 10:18:30,411 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 [2025-02-06 10:18:30,411 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-06 10:18:30,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:18:30,412 INFO L85 PathProgramCache]: Analyzing trace with hash -249770569, now seen corresponding path program 1 times [2025-02-06 10:18:30,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:18:30,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547999831] [2025-02-06 10:18:30,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:18:30,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:18:30,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-06 10:18:30,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-06 10:18:30,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:18:30,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:18:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 284 proven. 74 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-02-06 10:18:30,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:18:30,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547999831] [2025-02-06 10:18:30,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547999831] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:18:30,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899908509] [2025-02-06 10:18:30,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:18:30,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:18:30,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:18:30,939 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) [2025-02-06 10:18:30,943 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 [2025-02-06 10:18:31,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-06 10:18:31,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-06 10:18:31,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:18:31,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:18:31,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-02-06 10:18:31,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:18:31,344 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-02-06 10:18:31,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-02-06 10:18:31,505 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2025-02-06 10:18:31,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2025-02-06 10:18:31,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 10:18:31,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 21 treesize of output 9 [2025-02-06 10:18:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 309 proven. 48 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2025-02-06 10:18:31,616 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:18:31,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899908509] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:18:31,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:18:31,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23] total 27 [2025-02-06 10:18:31,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239196416] [2025-02-06 10:18:31,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:18:31,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-06 10:18:31,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:18:31,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-06 10:18:31,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2025-02-06 10:18:31,668 INFO L87 Difference]: Start difference. First operand 229 states and 248 transitions. Second operand has 28 states, 27 states have (on average 3.037037037037037) internal successors, (82), 24 states have internal predecessors, (82), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-06 10:18:32,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:18:32,413 INFO L93 Difference]: Finished difference Result 225 states and 244 transitions. [2025-02-06 10:18:32,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 10:18:32,413 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.037037037037037) internal successors, (82), 24 states have internal predecessors, (82), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 101 [2025-02-06 10:18:32,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:18:32,414 INFO L225 Difference]: With dead ends: 225 [2025-02-06 10:18:32,414 INFO L226 Difference]: Without dead ends: 225 [2025-02-06 10:18:32,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=1039, Unknown=0, NotChecked=0, Total=1190 [2025-02-06 10:18:32,415 INFO L435 NwaCegarLoop]: 178 mSDtfsCounter, 35 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:18:32,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2003 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 10:18:32,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-02-06 10:18:32,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2025-02-06 10:18:32,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 144 states have (on average 1.5902777777777777) internal successors, (229), 215 states have internal predecessors, (229), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-06 10:18:32,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 244 transitions. [2025-02-06 10:18:32,419 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 244 transitions. Word has length 101 [2025-02-06 10:18:32,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:18:32,420 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 244 transitions. [2025-02-06 10:18:32,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.037037037037037) internal successors, (82), 24 states have internal predecessors, (82), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-06 10:18:32,420 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 244 transitions. [2025-02-06 10:18:32,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-06 10:18:32,420 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:18:32,421 INFO L218 NwaCegarLoop]: trace histogram [22, 6, 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, 1, 1, 1, 1] [2025-02-06 10:18:32,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 10:18:32,625 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 [2025-02-06 10:18:32,625 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 84 more)] === [2025-02-06 10:18:32,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:18:32,625 INFO L85 PathProgramCache]: Analyzing trace with hash -249770568, now seen corresponding path program 1 times [2025-02-06 10:18:32,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:18:32,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294083269] [2025-02-06 10:18:32,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:18:32,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:18:32,649 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-06 10:18:32,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-06 10:18:32,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:18:32,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:18:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 241 proven. 49 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-02-06 10:18:33,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:18:33,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294083269] [2025-02-06 10:18:33,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294083269] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:18:33,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267227776] [2025-02-06 10:18:33,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:18:33,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:18:33,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:18:33,653 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) [2025-02-06 10:18:33,654 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 [2025-02-06 10:18:33,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-06 10:18:34,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-06 10:18:34,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:18:34,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:18:34,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 99 conjuncts are in the unsatisfiable core [2025-02-06 10:18:34,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:18:34,288 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 [2025-02-06 10:18:41,866 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-06 10:18:41,866 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 18 treesize of output 17 [2025-02-06 10:18:41,886 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:18:41,886 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 [2025-02-06 10:18:41,984 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 [2025-02-06 10:18:41,985 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 189 proven. 217 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-02-06 10:18:41,985 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:18:42,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267227776] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:18:42,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:18:42,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 33] total 50 [2025-02-06 10:18:42,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851367700] [2025-02-06 10:18:42,119 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:18:42,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-02-06 10:18:42,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:18:42,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-02-06 10:18:42,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2483, Unknown=0, NotChecked=0, Total=2652 [2025-02-06 10:18:42,122 INFO L87 Difference]: Start difference. First operand 225 states and 244 transitions. Second operand has 50 states, 48 states have (on average 1.9166666666666667) internal successors, (92), 44 states have internal predecessors, (92), 3 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (9), 6 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-06 10:18:46,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-06 10:18:50,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-06 10:18:58,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-06 10:19:02,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-06 10:19:07,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-06 10:19:12,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-06 10:19:16,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-06 10:19:22,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-06 10:19:26,365 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]