./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c --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-ext3/getNumbers4-2.c -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 4f3d269e2deae26c7ce036912e3874a49494c634991dfc4135fd1a54005e7fac --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:20:56,289 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:20:56,348 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 10:20:56,353 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:20:56,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:20:56,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:20:56,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:20:56,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:20:56,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:20:56,374 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:20:56,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:20:56,374 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:20:56,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:20:56,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:20:56,374 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:20:56,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:20:56,376 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:20:56,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:20:56,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:20:56,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:20:56,376 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:20:56,377 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:20:56,377 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:20:56,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:20:56,377 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:20:56,377 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:20:56,377 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:20:56,377 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:20:56,377 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:20:56,378 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:20:56,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:20:56,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:20:56,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:20:56,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:20:56,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:20:56,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:20:56,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:20:56,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:20:56,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:20:56,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:20:56,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:20:56,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:20:56,379 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 -> 4f3d269e2deae26c7ce036912e3874a49494c634991dfc4135fd1a54005e7fac [2025-02-06 10:20:56,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:20:56,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:20:56,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:20:56,620 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:20:56,620 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:20:56,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2025-02-06 10:20:57,804 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9214f9d02/d22296788f2248a3b50c866315ce83bd/FLAGc584c1658 [2025-02-06 10:20:58,048 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:20:58,048 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers4-2.c [2025-02-06 10:20:58,053 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9214f9d02/d22296788f2248a3b50c866315ce83bd/FLAGc584c1658 [2025-02-06 10:20:58,379 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9214f9d02/d22296788f2248a3b50c866315ce83bd [2025-02-06 10:20:58,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:20:58,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:20:58,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:20:58,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:20:58,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:20:58,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:20:58" (1/1) ... [2025-02-06 10:20:58,387 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff9fc39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58, skipping insertion in model container [2025-02-06 10:20:58,387 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:20:58" (1/1) ... [2025-02-06 10:20:58,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:20:58,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:20:58,502 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:20:58,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:20:58,528 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:20:58,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58 WrapperNode [2025-02-06 10:20:58,529 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:20:58,530 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:20:58,530 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:20:58,530 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:20:58,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58" (1/1) ... [2025-02-06 10:20:58,538 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58" (1/1) ... [2025-02-06 10:20:58,557 INFO L138 Inliner]: procedures = 14, calls = 50, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 111 [2025-02-06 10:20:58,557 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:20:58,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:20:58,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:20:58,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:20:58,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58" (1/1) ... [2025-02-06 10:20:58,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58" (1/1) ... [2025-02-06 10:20:58,571 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58" (1/1) ... [2025-02-06 10:20:58,582 INFO L175 MemorySlicer]: Split 38 memory accesses to 4 slices as follows [12, 12, 12, 2]. 32 percent of accesses are in the largest equivalence class. The 30 initializations are split as follows [10, 10, 10, 0]. The 4 writes are split as follows [1, 1, 1, 1]. [2025-02-06 10:20:58,582 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58" (1/1) ... [2025-02-06 10:20:58,582 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58" (1/1) ... [2025-02-06 10:20:58,592 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58" (1/1) ... [2025-02-06 10:20:58,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58" (1/1) ... [2025-02-06 10:20:58,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58" (1/1) ... [2025-02-06 10:20:58,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58" (1/1) ... [2025-02-06 10:20:58,600 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:20:58,605 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:20:58,605 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:20:58,605 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:20:58,605 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58" (1/1) ... [2025-02-06 10:20:58,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:20:58,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:20:58,640 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 10:20:58,644 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 10:20:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 10:20:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 10:20:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 10:20:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 10:20:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 10:20:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 10:20:58,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 10:20:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 10:20:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 10:20:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 10:20:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:20:58,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:20:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 10:20:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 10:20:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 10:20:58,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 10:20:58,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:20:58,739 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:20:58,741 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:20:58,939 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L26: call ULTIMATE.dealloc(getNumbers3_~#numbers3~0#1.base, getNumbers3_~#numbers3~0#1.offset);havoc getNumbers3_~#numbers3~0#1.base, getNumbers3_~#numbers3~0#1.offset; [2025-02-06 10:20:58,947 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2025-02-06 10:20:58,947 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:20:58,956 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:20:58,957 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:20:58,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:20:58 BoogieIcfgContainer [2025-02-06 10:20:58,957 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:20:58,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:20:58,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:20:58,962 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:20:58,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:20:58" (1/3) ... [2025-02-06 10:20:58,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263315af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:20:58, skipping insertion in model container [2025-02-06 10:20:58,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:20:58" (2/3) ... [2025-02-06 10:20:58,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@263315af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:20:58, skipping insertion in model container [2025-02-06 10:20:58,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:20:58" (3/3) ... [2025-02-06 10:20:58,965 INFO L128 eAbstractionObserver]: Analyzing ICFG getNumbers4-2.c [2025-02-06 10:20:58,975 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:20:58,977 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG getNumbers4-2.c that has 1 procedures, 44 locations, 1 initial locations, 5 loop locations, and 17 error locations. [2025-02-06 10:20:58,999 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:20:59,010 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;@1c869e5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:20:59,011 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-02-06 10:20:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 43 states have internal predecessors, (48), 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 10:20:59,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 10:20:59,019 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:20:59,019 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 10:20:59,020 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:20:59,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:20:59,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2523262, now seen corresponding path program 1 times [2025-02-06 10:20:59,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:20:59,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746239185] [2025-02-06 10:20:59,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:20:59,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:20:59,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 10:20:59,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 10:20:59,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:20:59,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:20:59,226 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 10:20:59,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:20:59,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746239185] [2025-02-06 10:20:59,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746239185] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:20:59,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:20:59,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 10:20:59,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568950124] [2025-02-06 10:20:59,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:20:59,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:20:59,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:20:59,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:20:59,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:20:59,252 INFO L87 Difference]: Start difference. First operand has 44 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 43 states have internal predecessors, (48), 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) Second operand has 3 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 10:20:59,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:20:59,307 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2025-02-06 10:20:59,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:20:59,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 10:20:59,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:20:59,313 INFO L225 Difference]: With dead ends: 43 [2025-02-06 10:20:59,313 INFO L226 Difference]: Without dead ends: 41 [2025-02-06 10:20:59,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 10:20:59,316 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 22 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:20:59,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 45 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:20:59,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-06 10:20:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2025-02-06 10:20:59,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.8) internal successors, (45), 40 states have internal predecessors, (45), 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 10:20:59,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2025-02-06 10:20:59,339 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 4 [2025-02-06 10:20:59,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:20:59,340 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2025-02-06 10:20:59,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 10:20:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2025-02-06 10:20:59,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 10:20:59,340 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:20:59,341 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 10:20:59,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 10:20:59,341 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:20:59,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:20:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2523263, now seen corresponding path program 1 times [2025-02-06 10:20:59,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:20:59,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142570659] [2025-02-06 10:20:59,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:20:59,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:20:59,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 10:20:59,360 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 10:20:59,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:20:59,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:20:59,497 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 10:20:59,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:20:59,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142570659] [2025-02-06 10:20:59,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142570659] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:20:59,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:20:59,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:20:59,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739775101] [2025-02-06 10:20:59,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:20:59,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:20:59,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:20:59,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:20:59,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:20:59,499 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 10:20:59,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:20:59,557 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2025-02-06 10:20:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:20:59,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 10:20:59,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:20:59,557 INFO L225 Difference]: With dead ends: 44 [2025-02-06 10:20:59,558 INFO L226 Difference]: Without dead ends: 44 [2025-02-06 10:20:59,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:20:59,558 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:20:59,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 47 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:20:59,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-06 10:20:59,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2025-02-06 10:20:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 42 states have internal predecessors, (47), 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 10:20:59,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2025-02-06 10:20:59,576 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 4 [2025-02-06 10:20:59,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:20:59,576 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2025-02-06 10:20:59,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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 10:20:59,576 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2025-02-06 10:20:59,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 10:20:59,576 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:20:59,576 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2025-02-06 10:20:59,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 10:20:59,576 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:20:59,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:20:59,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2138897072, now seen corresponding path program 1 times [2025-02-06 10:20:59,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:20:59,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929170365] [2025-02-06 10:20:59,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:20:59,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:20:59,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 10:20:59,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 10:20:59,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:20:59,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:20:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:20:59,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:20:59,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929170365] [2025-02-06 10:20:59,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929170365] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:20:59,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768794216] [2025-02-06 10:20:59,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:20:59,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:20:59,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:20:59,729 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 10:20:59,731 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 10:20:59,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 10:20:59,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 10:20:59,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:20:59,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:20:59,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 10:20:59,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:20:59,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:20:59,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:20:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:20:59,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768794216] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:20:59,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:20:59,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2025-02-06 10:20:59,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814612516] [2025-02-06 10:20:59,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:20:59,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:20:59,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:20:59,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:20:59,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:20:59,984 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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 10:21:00,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:00,153 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2025-02-06 10:21:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:21:00,154 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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 7 [2025-02-06 10:21:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:00,154 INFO L225 Difference]: With dead ends: 50 [2025-02-06 10:21:00,154 INFO L226 Difference]: Without dead ends: 50 [2025-02-06 10:21:00,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2025-02-06 10:21:00,155 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 108 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:00,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 113 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:00,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-06 10:21:00,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2025-02-06 10:21:00,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.542857142857143) internal successors, (54), 49 states have internal predecessors, (54), 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 10:21:00,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2025-02-06 10:21:00,158 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 7 [2025-02-06 10:21:00,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:00,158 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2025-02-06 10:21:00,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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 10:21:00,158 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2025-02-06 10:21:00,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 10:21:00,159 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:00,159 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:00,166 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 10:21:00,363 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 10:21:00,363 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:00,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:00,364 INFO L85 PathProgramCache]: Analyzing trace with hash -231239076, now seen corresponding path program 1 times [2025-02-06 10:21:00,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:00,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224151451] [2025-02-06 10:21:00,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:00,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:00,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:21:00,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:21:00,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:00,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-06 10:21:00,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:00,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224151451] [2025-02-06 10:21:00,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224151451] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:00,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:00,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:21:00,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689085146] [2025-02-06 10:21:00,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:00,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:21:00,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:00,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:21:00,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:00,480 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 10:21:00,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:00,534 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2025-02-06 10:21:00,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:21:00,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 18 [2025-02-06 10:21:00,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:00,535 INFO L225 Difference]: With dead ends: 49 [2025-02-06 10:21:00,536 INFO L226 Difference]: Without dead ends: 49 [2025-02-06 10:21:00,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:21:00,536 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 25 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:00,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 78 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:00,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-02-06 10:21:00,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2025-02-06 10:21:00,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 48 states have internal predecessors, (53), 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 10:21:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2025-02-06 10:21:00,543 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 18 [2025-02-06 10:21:00,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:00,543 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2025-02-06 10:21:00,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 10:21:00,543 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2025-02-06 10:21:00,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 10:21:00,543 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:00,543 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:00,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 10:21:00,544 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:00,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash -231239075, now seen corresponding path program 1 times [2025-02-06 10:21:00,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:00,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605122765] [2025-02-06 10:21:00,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:00,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:00,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:21:00,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:21:00,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:00,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:00,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:00,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605122765] [2025-02-06 10:21:00,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605122765] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:00,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410184647] [2025-02-06 10:21:00,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:00,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:00,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:00,648 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 10:21:00,649 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 10:21:00,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:21:00,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:21:00,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:00,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:00,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 10:21:00,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:00,734 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:00,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:00,789 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:00,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410184647] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:00,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:00,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-06 10:21:00,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099677561] [2025-02-06 10:21:00,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:00,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:21:00,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:00,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:21:00,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:21:00,791 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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 10:21:00,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:00,830 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2025-02-06 10:21:00,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:21:00,831 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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 18 [2025-02-06 10:21:00,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:00,831 INFO L225 Difference]: With dead ends: 67 [2025-02-06 10:21:00,831 INFO L226 Difference]: Without dead ends: 67 [2025-02-06 10:21:00,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:21:00,832 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 4 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:00,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 188 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-02-06 10:21:00,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2025-02-06 10:21:00,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 66 states have internal predecessors, (71), 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 10:21:00,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2025-02-06 10:21:00,835 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 18 [2025-02-06 10:21:00,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:00,835 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2025-02-06 10:21:00,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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 10:21:00,836 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2025-02-06 10:21:00,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-06 10:21:00,837 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:00,837 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:00,843 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 10:21:01,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:01,042 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:01,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:01,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1140569731, now seen corresponding path program 2 times [2025-02-06 10:21:01,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:01,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356298351] [2025-02-06 10:21:01,043 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:01,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:01,054 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-02-06 10:21:01,060 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 36 statements. [2025-02-06 10:21:01,060 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:21:01,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:21:01,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:01,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356298351] [2025-02-06 10:21:01,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356298351] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:01,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:01,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:01,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761230038] [2025-02-06 10:21:01,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:01,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:21:01,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:01,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:21:01,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:01,147 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10:21:01,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:01,224 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2025-02-06 10:21:01,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:21:01,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 36 [2025-02-06 10:21:01,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:01,225 INFO L225 Difference]: With dead ends: 72 [2025-02-06 10:21:01,225 INFO L226 Difference]: Without dead ends: 72 [2025-02-06 10:21:01,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:21:01,226 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 46 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:01,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:01,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-02-06 10:21:01,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2025-02-06 10:21:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 68 states have internal predecessors, (73), 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 10:21:01,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2025-02-06 10:21:01,229 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 36 [2025-02-06 10:21:01,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:01,229 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2025-02-06 10:21:01,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10:21:01,229 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2025-02-06 10:21:01,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-06 10:21:01,230 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:01,230 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:01,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 10:21:01,230 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:01,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash -997923318, now seen corresponding path program 1 times [2025-02-06 10:21:01,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:01,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318921425] [2025-02-06 10:21:01,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:01,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:01,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 10:21:01,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 10:21:01,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:01,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:01,340 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:21:01,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:01,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318921425] [2025-02-06 10:21:01,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318921425] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:01,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:01,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 10:21:01,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367466736] [2025-02-06 10:21:01,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:01,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:21:01,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:01,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:21:01,341 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:21:01,342 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10:21:01,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:01,364 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2025-02-06 10:21:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:21:01,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 37 [2025-02-06 10:21:01,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:01,365 INFO L225 Difference]: With dead ends: 68 [2025-02-06 10:21:01,365 INFO L226 Difference]: Without dead ends: 68 [2025-02-06 10:21:01,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 10:21:01,365 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 13 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:01,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 41 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:01,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-06 10:21:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2025-02-06 10:21:01,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.309090909090909) internal successors, (72), 67 states have internal predecessors, (72), 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 10:21:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2025-02-06 10:21:01,370 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 37 [2025-02-06 10:21:01,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:01,371 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2025-02-06 10:21:01,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10:21:01,371 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2025-02-06 10:21:01,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-06 10:21:01,372 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:01,372 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:01,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 10:21:01,372 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:01,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:01,373 INFO L85 PathProgramCache]: Analyzing trace with hash -997923317, now seen corresponding path program 1 times [2025-02-06 10:21:01,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:01,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088857766] [2025-02-06 10:21:01,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:01,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:01,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 10:21:01,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 10:21:01,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:01,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:21:01,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:01,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088857766] [2025-02-06 10:21:01,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088857766] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:01,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:01,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:21:01,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214000415] [2025-02-06 10:21:01,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:01,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:01,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:01,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:01,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:01,502 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10:21:01,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:01,541 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2025-02-06 10:21:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:01,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 37 [2025-02-06 10:21:01,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:01,541 INFO L225 Difference]: With dead ends: 70 [2025-02-06 10:21:01,542 INFO L226 Difference]: Without dead ends: 70 [2025-02-06 10:21:01,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:01,542 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 36 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:01,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 43 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:01,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-02-06 10:21:01,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2025-02-06 10:21:01,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 68 states have internal predecessors, (73), 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 10:21:01,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2025-02-06 10:21:01,547 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 37 [2025-02-06 10:21:01,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:01,547 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2025-02-06 10:21:01,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10:21:01,547 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2025-02-06 10:21:01,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-06 10:21:01,548 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:01,548 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:01,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 10:21:01,548 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:01,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:01,549 INFO L85 PathProgramCache]: Analyzing trace with hash 630061561, now seen corresponding path program 1 times [2025-02-06 10:21:01,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:01,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102557935] [2025-02-06 10:21:01,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:01,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:01,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-06 10:21:01,568 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-06 10:21:01,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:01,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:21:01,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:01,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102557935] [2025-02-06 10:21:01,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102557935] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:01,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584546659] [2025-02-06 10:21:01,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:01,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:01,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:01,744 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 10:21:01,746 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 10:21:01,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-06 10:21:01,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-06 10:21:01,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:01,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:01,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:21:01,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:21:02,066 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:21:02,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584546659] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:02,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:02,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2025-02-06 10:21:02,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269355943] [2025-02-06 10:21:02,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:02,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 10:21:02,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:02,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 10:21:02,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:21:02,258 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 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 10:21:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:02,421 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2025-02-06 10:21:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:21:02,421 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 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 40 [2025-02-06 10:21:02,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:02,422 INFO L225 Difference]: With dead ends: 80 [2025-02-06 10:21:02,422 INFO L226 Difference]: Without dead ends: 80 [2025-02-06 10:21:02,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2025-02-06 10:21:02,423 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 170 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:02,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 97 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-06 10:21:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2025-02-06 10:21:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 79 states have internal predecessors, (88), 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 10:21:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2025-02-06 10:21:02,428 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 40 [2025-02-06 10:21:02,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:02,428 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2025-02-06 10:21:02,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 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 10:21:02,428 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2025-02-06 10:21:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-06 10:21:02,429 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:02,429 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:02,437 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 10:21:02,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:02,633 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:02,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:02,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1942928113, now seen corresponding path program 1 times [2025-02-06 10:21:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057627673] [2025-02-06 10:21:02,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:02,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:02,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-06 10:21:02,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-06 10:21:02,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:02,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:21:02,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:02,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057627673] [2025-02-06 10:21:02,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057627673] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:02,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235303359] [2025-02-06 10:21:02,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:02,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:02,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:02,797 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 10:21:02,798 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 10:21:02,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-06 10:21:02,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-06 10:21:02,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:02,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:02,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 10:21:02,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:21:03,103 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:03,267 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:21:03,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235303359] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:03,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:03,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2025-02-06 10:21:03,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220796296] [2025-02-06 10:21:03,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:03,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:21:03,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:03,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:21:03,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:21:03,269 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 11 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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 10:21:03,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:03,389 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2025-02-06 10:21:03,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:21:03,390 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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 41 [2025-02-06 10:21:03,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:03,390 INFO L225 Difference]: With dead ends: 81 [2025-02-06 10:21:03,390 INFO L226 Difference]: Without dead ends: 81 [2025-02-06 10:21:03,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:21:03,391 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 93 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:03,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 83 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:03,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-02-06 10:21:03,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2025-02-06 10:21:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 68 states have (on average 1.25) internal successors, (85), 80 states have internal predecessors, (85), 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 10:21:03,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2025-02-06 10:21:03,394 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 41 [2025-02-06 10:21:03,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:03,395 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2025-02-06 10:21:03,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 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 10:21:03,395 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2025-02-06 10:21:03,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-06 10:21:03,395 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:03,395 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2025-02-06 10:21:03,401 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 10:21:03,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 10:21:03,601 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:03,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:03,601 INFO L85 PathProgramCache]: Analyzing trace with hash 126572397, now seen corresponding path program 2 times [2025-02-06 10:21:03,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:03,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783200077] [2025-02-06 10:21:03,602 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:03,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:03,614 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 52 statements into 2 equivalence classes. [2025-02-06 10:21:03,639 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 52 of 52 statements. [2025-02-06 10:21:03,639 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:03,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:21:03,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:03,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783200077] [2025-02-06 10:21:03,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783200077] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:03,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306571282] [2025-02-06 10:21:03,905 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:03,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:03,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:03,908 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 10:21:03,909 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 10:21:03,950 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 52 statements into 2 equivalence classes. [2025-02-06 10:21:03,974 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 52 of 52 statements. [2025-02-06 10:21:03,975 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:03,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:03,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 10:21:03,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:21:04,281 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:21:04,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306571282] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:04,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:21:04,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2025-02-06 10:21:04,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016967470] [2025-02-06 10:21:04,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:04,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 10:21:04,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:04,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 10:21:04,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2025-02-06 10:21:04,283 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 10:21:04,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:04,472 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2025-02-06 10:21:04,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 10:21:04,472 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 52 [2025-02-06 10:21:04,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:04,474 INFO L225 Difference]: With dead ends: 81 [2025-02-06 10:21:04,474 INFO L226 Difference]: Without dead ends: 81 [2025-02-06 10:21:04,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:21:04,474 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 37 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:04,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 78 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:04,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-02-06 10:21:04,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2025-02-06 10:21:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 79 states have internal predecessors, (84), 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 10:21:04,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2025-02-06 10:21:04,477 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 52 [2025-02-06 10:21:04,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:04,477 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2025-02-06 10:21:04,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 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 10:21:04,477 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2025-02-06 10:21:04,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-06 10:21:04,480 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:04,481 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2025-02-06 10:21:04,487 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 10:21:04,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-06 10:21:04,681 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:04,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:04,682 INFO L85 PathProgramCache]: Analyzing trace with hash -371223013, now seen corresponding path program 2 times [2025-02-06 10:21:04,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:04,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017588752] [2025-02-06 10:21:04,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:04,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:04,690 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-02-06 10:21:04,692 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 53 statements. [2025-02-06 10:21:04,692 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:21:04,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2025-02-06 10:21:04,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:04,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017588752] [2025-02-06 10:21:04,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017588752] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:04,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925353679] [2025-02-06 10:21:04,773 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:04,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:04,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:04,775 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 10:21:04,777 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 10:21:04,816 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 53 statements into 2 equivalence classes. [2025-02-06 10:21:04,827 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 53 statements. [2025-02-06 10:21:04,827 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:21:04,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:04,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 10:21:04,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2025-02-06 10:21:05,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2025-02-06 10:21:05,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925353679] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:05,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:05,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2025-02-06 10:21:05,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931747338] [2025-02-06 10:21:05,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:05,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 10:21:05,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:05,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 10:21:05,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2025-02-06 10:21:05,713 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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 10:21:05,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:05,873 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2025-02-06 10:21:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:21:05,873 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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 53 [2025-02-06 10:21:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:05,874 INFO L225 Difference]: With dead ends: 79 [2025-02-06 10:21:05,874 INFO L226 Difference]: Without dead ends: 79 [2025-02-06 10:21:05,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2025-02-06 10:21:05,874 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 84 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:05,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 192 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-02-06 10:21:05,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2025-02-06 10:21:05,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 76 states have internal predecessors, (81), 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 10:21:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2025-02-06 10:21:05,877 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 53 [2025-02-06 10:21:05,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:05,877 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2025-02-06 10:21:05,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 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 10:21:05,877 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2025-02-06 10:21:05,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-06 10:21:05,878 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:05,878 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:05,886 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 10:21:06,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 10:21:06,082 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:06,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:06,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1376743242, now seen corresponding path program 1 times [2025-02-06 10:21:06,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:06,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742540107] [2025-02-06 10:21:06,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:06,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:06,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-06 10:21:06,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-06 10:21:06,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:06,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:21:06,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:06,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742540107] [2025-02-06 10:21:06,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742540107] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:06,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51343796] [2025-02-06 10:21:06,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:06,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:06,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:06,164 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 10:21:06,165 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 10:21:06,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-06 10:21:06,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-06 10:21:06,238 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:06,238 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:06,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 10:21:06,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:21:06,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-02-06 10:21:06,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51343796] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:06,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:06,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-06 10:21:06,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940666851] [2025-02-06 10:21:06,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:06,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:21:06,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:06,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:21:06,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:21:06,312 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 10:21:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:06,365 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2025-02-06 10:21:06,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:21:06,368 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 54 [2025-02-06 10:21:06,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:06,369 INFO L225 Difference]: With dead ends: 101 [2025-02-06 10:21:06,369 INFO L226 Difference]: Without dead ends: 101 [2025-02-06 10:21:06,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:21:06,369 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:06,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 132 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:06,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-02-06 10:21:06,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2025-02-06 10:21:06,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 90 states have (on average 1.1666666666666667) internal successors, (105), 100 states have internal predecessors, (105), 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 10:21:06,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2025-02-06 10:21:06,372 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 54 [2025-02-06 10:21:06,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:06,372 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2025-02-06 10:21:06,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 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 10:21:06,373 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2025-02-06 10:21:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-06 10:21:06,373 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:06,373 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:06,380 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 10:21:06,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:06,578 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:06,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:06,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2111890994, now seen corresponding path program 2 times [2025-02-06 10:21:06,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:06,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778756227] [2025-02-06 10:21:06,579 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:06,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:06,590 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 78 statements into 2 equivalence classes. [2025-02-06 10:21:06,595 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 78 statements. [2025-02-06 10:21:06,595 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:21:06,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:06,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:06,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778756227] [2025-02-06 10:21:06,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778756227] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:06,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:06,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:06,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237944151] [2025-02-06 10:21:06,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:06,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:21:06,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:06,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:21:06,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:06,667 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 10:21:06,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:06,706 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2025-02-06 10:21:06,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:21:06,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 78 [2025-02-06 10:21:06,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:06,707 INFO L225 Difference]: With dead ends: 100 [2025-02-06 10:21:06,707 INFO L226 Difference]: Without dead ends: 100 [2025-02-06 10:21:06,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:21:06,708 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:06,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 75 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:06,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-02-06 10:21:06,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2025-02-06 10:21:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 90 states have (on average 1.1555555555555554) internal successors, (104), 99 states have internal predecessors, (104), 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 10:21:06,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2025-02-06 10:21:06,715 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 78 [2025-02-06 10:21:06,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:06,717 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2025-02-06 10:21:06,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 10:21:06,717 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2025-02-06 10:21:06,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-06 10:21:06,718 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:06,718 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:06,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 10:21:06,718 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:06,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:06,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2111890995, now seen corresponding path program 1 times [2025-02-06 10:21:06,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:06,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304704364] [2025-02-06 10:21:06,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:06,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:06,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-06 10:21:06,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-06 10:21:06,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:06,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2025-02-06 10:21:06,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:06,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304704364] [2025-02-06 10:21:06,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304704364] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:06,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:06,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:21:06,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549646278] [2025-02-06 10:21:06,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:06,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:21:06,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:06,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:21:06,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:21:06,961 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 10:21:07,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:07,032 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2025-02-06 10:21:07,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:21:07,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 78 [2025-02-06 10:21:07,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:07,033 INFO L225 Difference]: With dead ends: 105 [2025-02-06 10:21:07,033 INFO L226 Difference]: Without dead ends: 105 [2025-02-06 10:21:07,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:21:07,035 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:07,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 58 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:07,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-02-06 10:21:07,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2025-02-06 10:21:07,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 101 states have internal predecessors, (106), 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 10:21:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2025-02-06 10:21:07,041 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 78 [2025-02-06 10:21:07,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:07,041 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2025-02-06 10:21:07,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 10:21:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2025-02-06 10:21:07,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-06 10:21:07,042 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:07,042 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:07,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 10:21:07,042 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:07,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:07,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1044111369, now seen corresponding path program 1 times [2025-02-06 10:21:07,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:07,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583431224] [2025-02-06 10:21:07,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:07,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:07,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-06 10:21:07,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-06 10:21:07,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:07,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:07,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:07,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583431224] [2025-02-06 10:21:07,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583431224] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:07,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:07,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:21:07,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932038130] [2025-02-06 10:21:07,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:07,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:21:07,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:07,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:21:07,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:21:07,115 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 10:21:07,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:07,131 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2025-02-06 10:21:07,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:21:07,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 79 [2025-02-06 10:21:07,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:07,132 INFO L225 Difference]: With dead ends: 101 [2025-02-06 10:21:07,132 INFO L226 Difference]: Without dead ends: 101 [2025-02-06 10:21:07,132 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 10:21:07,132 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:07,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 51 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:07,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-02-06 10:21:07,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2025-02-06 10:21:07,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 92 states have (on average 1.141304347826087) internal successors, (105), 100 states have internal predecessors, (105), 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 10:21:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2025-02-06 10:21:07,138 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 79 [2025-02-06 10:21:07,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:07,138 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2025-02-06 10:21:07,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 10:21:07,138 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2025-02-06 10:21:07,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-06 10:21:07,140 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:07,140 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:07,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 10:21:07,141 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:07,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:07,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1044111370, now seen corresponding path program 1 times [2025-02-06 10:21:07,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:07,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518339183] [2025-02-06 10:21:07,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:07,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:07,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-02-06 10:21:07,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-02-06 10:21:07,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:07,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:07,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:07,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518339183] [2025-02-06 10:21:07,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518339183] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:07,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:07,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:21:07,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732600365] [2025-02-06 10:21:07,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:07,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:21:07,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:07,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:21:07,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:21:07,249 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 10:21:07,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:07,268 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2025-02-06 10:21:07,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:21:07,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 79 [2025-02-06 10:21:07,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:07,269 INFO L225 Difference]: With dead ends: 103 [2025-02-06 10:21:07,270 INFO L226 Difference]: Without dead ends: 103 [2025-02-06 10:21:07,270 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 10:21:07,270 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:07,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:07,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2025-02-06 10:21:07,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2025-02-06 10:21:07,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 93 states have (on average 1.1397849462365592) internal successors, (106), 101 states have internal predecessors, (106), 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 10:21:07,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2025-02-06 10:21:07,273 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 79 [2025-02-06 10:21:07,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:07,274 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2025-02-06 10:21:07,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 10:21:07,274 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2025-02-06 10:21:07,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-02-06 10:21:07,274 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:07,274 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:07,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 10:21:07,275 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:07,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:07,275 INFO L85 PathProgramCache]: Analyzing trace with hash 968630511, now seen corresponding path program 1 times [2025-02-06 10:21:07,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:07,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713177490] [2025-02-06 10:21:07,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:07,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:07,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-02-06 10:21:07,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-02-06 10:21:07,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:07,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:07,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:07,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713177490] [2025-02-06 10:21:07,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713177490] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:07,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250980524] [2025-02-06 10:21:07,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:07,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:07,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:07,552 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 10:21:07,554 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 10:21:07,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-02-06 10:21:07,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-02-06 10:21:07,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:07,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:07,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 10:21:07,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:08,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:21:08,079 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 10:21:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:08,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:08,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250980524] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:08,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:08,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2025-02-06 10:21:08,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449702093] [2025-02-06 10:21:08,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:08,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 10:21:08,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:08,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 10:21:08,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:21:08,932 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 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 10:21:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:09,125 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2025-02-06 10:21:09,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:21:09,125 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 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 82 [2025-02-06 10:21:09,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:09,126 INFO L225 Difference]: With dead ends: 113 [2025-02-06 10:21:09,126 INFO L226 Difference]: Without dead ends: 113 [2025-02-06 10:21:09,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2025-02-06 10:21:09,127 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 99 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:09,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 161 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:09,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-02-06 10:21:09,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2025-02-06 10:21:09,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 112 states have internal predecessors, (121), 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 10:21:09,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 121 transitions. [2025-02-06 10:21:09,129 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 121 transitions. Word has length 82 [2025-02-06 10:21:09,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:09,129 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 121 transitions. [2025-02-06 10:21:09,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 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 10:21:09,129 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 121 transitions. [2025-02-06 10:21:09,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-06 10:21:09,129 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:09,129 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:09,136 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 10:21:09,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 10:21:09,330 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:09,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:09,331 INFO L85 PathProgramCache]: Analyzing trace with hash -37225266, now seen corresponding path program 1 times [2025-02-06 10:21:09,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:09,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262769537] [2025-02-06 10:21:09,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:09,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:09,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-06 10:21:09,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-06 10:21:09,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:09,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:09,457 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:09,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:09,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262769537] [2025-02-06 10:21:09,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262769537] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:09,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670927018] [2025-02-06 10:21:09,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:09,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:09,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:09,460 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 10:21:09,461 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 10:21:09,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-06 10:21:09,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-06 10:21:09,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:09,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:09,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:21:09,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:09,568 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 10:21:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:09,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:09,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670927018] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:09,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:09,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-02-06 10:21:09,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793134945] [2025-02-06 10:21:09,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:09,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:21:09,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:09,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:21:09,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:21:09,637 INFO L87 Difference]: Start difference. First operand 113 states and 121 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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 10:21:09,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:09,710 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2025-02-06 10:21:09,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:21:09,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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 83 [2025-02-06 10:21:09,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:09,710 INFO L225 Difference]: With dead ends: 114 [2025-02-06 10:21:09,710 INFO L226 Difference]: Without dead ends: 114 [2025-02-06 10:21:09,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:21:09,711 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:09,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 105 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-02-06 10:21:09,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2025-02-06 10:21:09,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 105 states have (on average 1.1428571428571428) internal successors, (120), 113 states have internal predecessors, (120), 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 10:21:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 120 transitions. [2025-02-06 10:21:09,716 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 120 transitions. Word has length 83 [2025-02-06 10:21:09,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:09,716 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 120 transitions. [2025-02-06 10:21:09,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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 10:21:09,717 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 120 transitions. [2025-02-06 10:21:09,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-02-06 10:21:09,717 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:09,717 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:09,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 10:21:09,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:09,917 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:09,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:09,918 INFO L85 PathProgramCache]: Analyzing trace with hash -380692281, now seen corresponding path program 1 times [2025-02-06 10:21:09,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:09,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126374294] [2025-02-06 10:21:09,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:09,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:09,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-06 10:21:09,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-06 10:21:09,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:09,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:09,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:09,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126374294] [2025-02-06 10:21:09,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126374294] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:09,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622088454] [2025-02-06 10:21:09,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:09,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:09,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:09,984 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 10:21:09,986 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 10:21:10,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-06 10:21:10,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-06 10:21:10,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:10,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:10,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:21:10,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:10,110 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:10,130 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:10,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622088454] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:10,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:10,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-06 10:21:10,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209346718] [2025-02-06 10:21:10,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:10,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:21:10,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:10,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:21:10,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:21:10,132 INFO L87 Difference]: Start difference. First operand 114 states and 120 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 10:21:10,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:10,160 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2025-02-06 10:21:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:21:10,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 88 [2025-02-06 10:21:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:10,161 INFO L225 Difference]: With dead ends: 120 [2025-02-06 10:21:10,161 INFO L226 Difference]: Without dead ends: 120 [2025-02-06 10:21:10,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:21:10,162 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:10,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:10,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-02-06 10:21:10,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2025-02-06 10:21:10,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 111 states have (on average 1.135135135135135) internal successors, (126), 119 states have internal predecessors, (126), 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 10:21:10,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 126 transitions. [2025-02-06 10:21:10,164 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 126 transitions. Word has length 88 [2025-02-06 10:21:10,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:10,164 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 126 transitions. [2025-02-06 10:21:10,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 10:21:10,164 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 126 transitions. [2025-02-06 10:21:10,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-02-06 10:21:10,164 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:10,165 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:10,171 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 10:21:10,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:10,365 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:10,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:10,365 INFO L85 PathProgramCache]: Analyzing trace with hash -2095882973, now seen corresponding path program 2 times [2025-02-06 10:21:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:10,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187883482] [2025-02-06 10:21:10,366 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:10,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:10,376 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 94 statements into 2 equivalence classes. [2025-02-06 10:21:10,391 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 94 of 94 statements. [2025-02-06 10:21:10,392 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:10,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:10,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:10,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187883482] [2025-02-06 10:21:10,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187883482] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:10,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310996565] [2025-02-06 10:21:10,672 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:10,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:10,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:10,674 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 10:21:10,675 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 10:21:10,739 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 94 statements into 2 equivalence classes. [2025-02-06 10:21:10,777 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 94 of 94 statements. [2025-02-06 10:21:10,777 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:10,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:10,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 10:21:10,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:11,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:21:11,145 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 10:21:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:11,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2025-02-06 10:21:12,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310996565] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:12,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:12,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 22 [2025-02-06 10:21:12,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644634065] [2025-02-06 10:21:12,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:12,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 10:21:12,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:12,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 10:21:12,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2025-02-06 10:21:12,057 INFO L87 Difference]: Start difference. First operand 120 states and 126 transitions. Second operand has 24 states, 23 states have (on average 4.043478260869565) internal successors, (93), 23 states have internal predecessors, (93), 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 10:21:12,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:12,477 INFO L93 Difference]: Finished difference Result 135 states and 144 transitions. [2025-02-06 10:21:12,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 10:21:12,478 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.043478260869565) internal successors, (93), 23 states have internal predecessors, (93), 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 94 [2025-02-06 10:21:12,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:12,480 INFO L225 Difference]: With dead ends: 135 [2025-02-06 10:21:12,480 INFO L226 Difference]: Without dead ends: 135 [2025-02-06 10:21:12,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2025-02-06 10:21:12,481 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 183 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:12,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 212 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:21:12,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-02-06 10:21:12,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2025-02-06 10:21:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 127 states have (on average 1.1338582677165354) internal successors, (144), 134 states have internal predecessors, (144), 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 10:21:12,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 144 transitions. [2025-02-06 10:21:12,486 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 144 transitions. Word has length 94 [2025-02-06 10:21:12,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:12,486 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 144 transitions. [2025-02-06 10:21:12,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.043478260869565) internal successors, (93), 23 states have internal predecessors, (93), 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 10:21:12,487 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 144 transitions. [2025-02-06 10:21:12,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-02-06 10:21:12,488 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:12,488 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:12,498 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 10:21:12,688 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,SelfDestructingSolverStorable20 [2025-02-06 10:21:12,688 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:12,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:12,689 INFO L85 PathProgramCache]: Analyzing trace with hash -547862758, now seen corresponding path program 2 times [2025-02-06 10:21:12,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:12,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434073599] [2025-02-06 10:21:12,689 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:12,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:12,699 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-02-06 10:21:12,702 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 95 statements. [2025-02-06 10:21:12,702 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:21:12,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2025-02-06 10:21:12,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:12,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434073599] [2025-02-06 10:21:12,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434073599] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:12,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870220410] [2025-02-06 10:21:12,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:12,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:12,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:12,762 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 10:21:12,764 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 10:21:12,831 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-02-06 10:21:12,842 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 95 statements. [2025-02-06 10:21:12,842 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:21:12,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:12,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 10:21:12,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:12,906 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 1 [2025-02-06 10:21:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2025-02-06 10:21:12,997 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2025-02-06 10:21:13,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870220410] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:13,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:13,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-02-06 10:21:13,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125597176] [2025-02-06 10:21:13,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:13,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 10:21:13,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:13,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 10:21:13,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:21:13,309 INFO L87 Difference]: Start difference. First operand 135 states and 144 transitions. Second operand has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 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 10:21:13,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:13,390 INFO L93 Difference]: Finished difference Result 134 states and 138 transitions. [2025-02-06 10:21:13,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:21:13,393 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 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 95 [2025-02-06 10:21:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:13,394 INFO L225 Difference]: With dead ends: 134 [2025-02-06 10:21:13,394 INFO L226 Difference]: Without dead ends: 134 [2025-02-06 10:21:13,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2025-02-06 10:21:13,395 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:13,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 150 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:13,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2025-02-06 10:21:13,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2025-02-06 10:21:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 127 states have (on average 1.0866141732283465) internal successors, (138), 133 states have internal predecessors, (138), 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 10:21:13,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 138 transitions. [2025-02-06 10:21:13,398 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 138 transitions. Word has length 95 [2025-02-06 10:21:13,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:13,398 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 138 transitions. [2025-02-06 10:21:13,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 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 10:21:13,399 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 138 transitions. [2025-02-06 10:21:13,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2025-02-06 10:21:13,399 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:13,399 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:13,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 10:21:13,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:13,600 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2025-02-06 10:21:13,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:13,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1120383321, now seen corresponding path program 2 times [2025-02-06 10:21:13,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:13,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741530880] [2025-02-06 10:21:13,600 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:13,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:13,613 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 120 statements into 2 equivalence classes. [2025-02-06 10:21:13,655 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 120 of 120 statements. [2025-02-06 10:21:13,655 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:13,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 10:21:13,655 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 10:21:13,664 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 120 statements into 1 equivalence classes. [2025-02-06 10:21:13,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 120 of 120 statements. [2025-02-06 10:21:13,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:13,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 10:21:13,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 10:21:13,730 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 10:21:13,732 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2025-02-06 10:21:13,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (15 of 17 remaining) [2025-02-06 10:21:13,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2025-02-06 10:21:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2025-02-06 10:21:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2025-02-06 10:21:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2025-02-06 10:21:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2025-02-06 10:21:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2025-02-06 10:21:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2025-02-06 10:21:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2025-02-06 10:21:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2025-02-06 10:21:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2025-02-06 10:21:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 17 remaining) [2025-02-06 10:21:13,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 17 remaining) [2025-02-06 10:21:13,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 17 remaining) [2025-02-06 10:21:13,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 17 remaining) [2025-02-06 10:21:13,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 17 remaining) [2025-02-06 10:21:13,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-06 10:21:13,737 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:13,814 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 10:21:13,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 10:21:13 BoogieIcfgContainer [2025-02-06 10:21:13,819 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 10:21:13,819 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 10:21:13,819 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 10:21:13,819 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 10:21:13,822 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:20:58" (3/4) ... [2025-02-06 10:21:13,822 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-02-06 10:21:13,902 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 42. [2025-02-06 10:21:13,968 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 10:21:13,968 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 10:21:13,968 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 10:21:13,969 INFO L158 Benchmark]: Toolchain (without parser) took 15587.06ms. Allocated memory was 142.6MB in the beginning and 444.6MB in the end (delta: 302.0MB). Free memory was 105.3MB in the beginning and 298.9MB in the end (delta: -193.6MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. [2025-02-06 10:21:13,970 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:21:13,970 INFO L158 Benchmark]: CACSL2BoogieTranslator took 146.65ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 93.6MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 10:21:13,970 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.41ms. Allocated memory is still 142.6MB. Free memory was 93.6MB in the beginning and 92.4MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 10:21:13,970 INFO L158 Benchmark]: Boogie Preprocessor took 42.50ms. Allocated memory is still 142.6MB. Free memory was 92.4MB in the beginning and 90.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:21:13,970 INFO L158 Benchmark]: IcfgBuilder took 352.44ms. Allocated memory is still 142.6MB. Free memory was 90.4MB in the beginning and 72.6MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 10:21:13,971 INFO L158 Benchmark]: TraceAbstraction took 14860.04ms. Allocated memory was 142.6MB in the beginning and 444.6MB in the end (delta: 302.0MB). Free memory was 72.6MB in the beginning and 311.5MB in the end (delta: -238.9MB). Peak memory consumption was 58.8MB. Max. memory is 16.1GB. [2025-02-06 10:21:13,971 INFO L158 Benchmark]: Witness Printer took 149.00ms. Allocated memory is still 444.6MB. Free memory was 311.5MB in the beginning and 298.9MB in the end (delta: 12.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 10:21:13,972 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 146.65ms. Allocated memory is still 142.6MB. Free memory was 105.3MB in the beginning and 93.6MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.41ms. Allocated memory is still 142.6MB. Free memory was 93.6MB in the beginning and 92.4MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.50ms. Allocated memory is still 142.6MB. Free memory was 92.4MB in the beginning and 90.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 352.44ms. Allocated memory is still 142.6MB. Free memory was 90.4MB in the beginning and 72.6MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 14860.04ms. Allocated memory was 142.6MB in the beginning and 444.6MB in the end (delta: 302.0MB). Free memory was 72.6MB in the beginning and 311.5MB in the end (delta: -238.9MB). Peak memory consumption was 58.8MB. Max. memory is 16.1GB. * Witness Printer took 149.00ms. Allocated memory is still 444.6MB. Free memory was 311.5MB in the beginning and 298.9MB in the end (delta: 12.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L6] static int array[10]; [L6] static int array[10]; [L6] static int array[10]; [L6] static int array[10]; [L6] static int array[10]; [L6] static int array[10]; [L6] static int array[10]; [L6] static int array[10]; [L6] static int array[10]; [L6] static int array[10]; [L6] static int array[10]; [L17] static int numbers2[10]; [L17] static int numbers2[10]; [L17] static int numbers2[10]; [L17] static int numbers2[10]; [L17] static int numbers2[10]; [L17] static int numbers2[10]; [L17] static int numbers2[10]; [L17] static int numbers2[10]; [L17] static int numbers2[10]; [L17] static int numbers2[10]; [L17] static int numbers2[10]; [L36] static int numbers4[10]; [L36] static int numbers4[10]; [L36] static int numbers4[10]; [L36] static int numbers4[10]; [L36] static int numbers4[10]; [L36] static int numbers4[10]; [L36] static int numbers4[10]; [L36] static int numbers4[10]; [L36] static int numbers4[10]; [L36] static int numbers4[10]; [L36] static int numbers4[10]; VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L45] CALL getNumbers4() [L35] CALL, EXPR getNumbers3() [L25] CALL, EXPR getNumbers2() [L16] CALL, EXPR getNumbers() [L8] int i = 0; VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=1, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=2, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=3, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=4, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=5, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=6, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=7, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=8, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=9, numbers2={2:0}, numbers4={3:0}] [L8] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L9] array[i] = i VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L8] ++i VAL [array={1:0}, i=10, numbers2={2:0}, numbers4={3:0}] [L8] COND FALSE !(i < 10) [L12] return array; VAL [\result={1:0}, array={1:0}, numbers2={2:0}, numbers4={3:0}] [L16] RET, EXPR getNumbers() [L16] int* numbers = getNumbers(); [L18] int i = 0; VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] ++i VAL [array={1:0}, i=1, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] ++i VAL [array={1:0}, i=2, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] ++i VAL [array={1:0}, i=3, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] ++i VAL [array={1:0}, i=4, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] ++i VAL [array={1:0}, i=5, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] ++i VAL [array={1:0}, i=6, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] ++i VAL [array={1:0}, i=7, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] ++i VAL [array={1:0}, i=8, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] ++i VAL [array={1:0}, i=9, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L19] numbers2[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L18] ++i VAL [array={1:0}, i=10, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L18] COND FALSE !(i < 10) [L21] return numbers2; VAL [\result={2:0}, array={1:0}, numbers2={2:0}, numbers4={3:0}, numbers={1:0}] [L25] RET, EXPR getNumbers2() [L25] int* numbers = getNumbers2(); [L26] int numbers3[10]; [L27] int i = 0; VAL [array={1:0}, i=0, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L27] ++i VAL [array={1:0}, i=1, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L27] ++i VAL [array={1:0}, i=2, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L27] ++i VAL [array={1:0}, i=3, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L27] ++i VAL [array={1:0}, i=4, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L27] ++i VAL [array={1:0}, i=5, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L27] ++i VAL [array={1:0}, i=6, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L27] ++i VAL [array={1:0}, i=7, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L27] ++i VAL [array={1:0}, i=8, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L27] ++i VAL [array={1:0}, i=9, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] EXPR numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L28] numbers3[i] = numbers[i] VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L27] ++i VAL [array={1:0}, i=10, numbers2={2:0}, numbers3={10:0}, numbers4={3:0}, numbers={2:0}] [L27] COND FALSE !(i < 10) [L31] return numbers3; [L31] return numbers3; VAL [\result={10:0}, array={1:0}, numbers2={2:0}, numbers4={3:0}, numbers={2:0}] [L35] RET, EXPR getNumbers3() [L35] int* numbers = getNumbers3(); [L37] int i = 0; VAL [array={1:0}, i=0, numbers2={2:0}, numbers4={3:0}, numbers={10:0}] [L37] COND TRUE i < 10 VAL [array={1:0}, numbers2={2:0}, numbers4={3:0}] [L38] numbers[i] - UnprovableResult [Line: 43]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 14.7s, OverallIterations: 23, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1074 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1074 mSDsluCounter, 2153 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1557 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2028 IncrementalHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 596 mSDtfsCounter, 2028 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1487 GetRequests, 1261 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=21, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 12 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 1984 NumberOfCodeBlocks, 1620 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 2474 ConstructedInterpolants, 150 QuantifiedInterpolants, 24286 SizeOfPredicates, 16 NumberOfNonLiveVariables, 3346 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 45 InterpolantComputations, 11 PerfectInterpolantSequences, 9088/9432 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-02-06 10:21:13,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)