./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 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/loops/veris.c_sendmail_tTflag_arr_one_loop.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 d3ed36aa6701f38e4437e494734e2c4cd3d174950cdc9cef44311577dda2ee95 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 22:46:20,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 22:46:20,545 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-09 22:46:20,548 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 22:46:20,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 22:46:20,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 22:46:20,571 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 22:46:20,572 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 22:46:20,572 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 22:46:20,572 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 22:46:20,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 22:46:20,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 22:46:20,572 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 22:46:20,572 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 22:46:20,572 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 22:46:20,572 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 22:46:20,572 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 22:46:20,573 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:46:20,573 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:46:20,573 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:46:20,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:46:20,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:46:20,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 22:46:20,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 22:46:20,578 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 22:46:20,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 22:46:20,578 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 22:46:20,578 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 22:46:20,578 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 22:46:20,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 22:46:20,578 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 -> d3ed36aa6701f38e4437e494734e2c4cd3d174950cdc9cef44311577dda2ee95 [2025-01-09 22:46:20,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 22:46:20,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 22:46:20,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 22:46:20,886 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 22:46:20,887 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 22:46:20,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2025-01-09 22:46:22,091 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2f8e1c7fd/441dfafafa1a4e0a8ca7dcd8dbcf01e8/FLAGe431b5cce [2025-01-09 22:46:22,315 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 22:46:22,316 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2025-01-09 22:46:22,328 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2f8e1c7fd/441dfafafa1a4e0a8ca7dcd8dbcf01e8/FLAGe431b5cce [2025-01-09 22:46:22,340 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2f8e1c7fd/441dfafafa1a4e0a8ca7dcd8dbcf01e8 [2025-01-09 22:46:22,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 22:46:22,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 22:46:22,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 22:46:22,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 22:46:22,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 22:46:22,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1574a0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22, skipping insertion in model container [2025-01-09 22:46:22,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,379 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:46:22,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:46:22,503 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 22:46:22,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:46:22,528 INFO L204 MainTranslator]: Completed translation [2025-01-09 22:46:22,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22 WrapperNode [2025-01-09 22:46:22,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 22:46:22,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 22:46:22,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 22:46:22,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 22:46:22,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,541 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,554 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2025-01-09 22:46:22,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 22:46:22,555 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 22:46:22,555 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 22:46:22,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 22:46:22,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,563 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,575 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-01-09 22:46:22,576 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,576 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,580 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,590 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 22:46:22,591 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 22:46:22,591 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 22:46:22,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 22:46:22,595 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22" (1/1) ... [2025-01-09 22:46:22,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:46:22,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:46:22,624 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) [2025-01-09 22:46:22,628 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 [2025-01-09 22:46:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 22:46:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 22:46:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 22:46:22,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 22:46:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 22:46:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 22:46:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 22:46:22,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 22:46:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 22:46:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 22:46:22,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 22:46:22,716 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 22:46:22,717 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 22:46:22,801 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2025-01-09 22:46:22,801 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 22:46:22,807 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 22:46:22,807 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 22:46:22,807 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:46:22 BoogieIcfgContainer [2025-01-09 22:46:22,807 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 22:46:22,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 22:46:22,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 22:46:22,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 22:46:22,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:46:22" (1/3) ... [2025-01-09 22:46:22,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548bc7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:46:22, skipping insertion in model container [2025-01-09 22:46:22,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:22" (2/3) ... [2025-01-09 22:46:22,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548bc7f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:46:22, skipping insertion in model container [2025-01-09 22:46:22,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:46:22" (3/3) ... [2025-01-09 22:46:22,816 INFO L128 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c [2025-01-09 22:46:22,837 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 22:46:22,838 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG veris.c_sendmail_tTflag_arr_one_loop.c that has 1 procedures, 30 locations, 1 initial locations, 2 loop locations, and 10 error locations. [2025-01-09 22:46:22,890 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 22:46:22,905 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;@3d7e850d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 22:46:22,905 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-01-09 22:46:22,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 29 states have internal predecessors, (32), 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) [2025-01-09 22:46:22,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-01-09 22:46:22,917 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:46:22,918 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-01-09 22:46:22,918 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2025-01-09 22:46:22,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:46:22,926 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times [2025-01-09 22:46:22,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:46:22,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459249065] [2025-01-09 22:46:22,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:22,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:46:23,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-09 22:46:23,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-09 22:46:23,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:23,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:46:23,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:46:23,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459249065] [2025-01-09 22:46:23,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459249065] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:46:23,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:46:23,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 22:46:23,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209863369] [2025-01-09 22:46:23,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:46:23,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 22:46:23,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:46:23,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 22:46:23,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 22:46:23,117 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 29 states have internal predecessors, (32), 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), 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) [2025-01-09 22:46:23,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:46:23,158 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2025-01-09 22:46:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 22:46:23,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 [2025-01-09 22:46:23,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:46:23,163 INFO L225 Difference]: With dead ends: 25 [2025-01-09 22:46:23,164 INFO L226 Difference]: Without dead ends: 23 [2025-01-09 22:46:23,165 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 [2025-01-09 22:46:23,166 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:46:23,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 17 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:46:23,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-01-09 22:46:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-01-09 22:46:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.411764705882353) internal successors, (24), 22 states have internal predecessors, (24), 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) [2025-01-09 22:46:23,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2025-01-09 22:46:23,184 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 4 [2025-01-09 22:46:23,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:46:23,184 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2025-01-09 22:46:23,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-01-09 22:46:23,185 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2025-01-09 22:46:23,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-01-09 22:46:23,185 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:46:23,185 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-01-09 22:46:23,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 22:46:23,185 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2025-01-09 22:46:23,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:46:23,186 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2025-01-09 22:46:23,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:46:23,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355758614] [2025-01-09 22:46:23,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:23,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:46:23,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-09 22:46:23,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-09 22:46:23,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:23,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:23,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:46:23,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:46:23,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355758614] [2025-01-09 22:46:23,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355758614] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:46:23,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:46:23,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:46:23,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064232904] [2025-01-09 22:46:23,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:46:23,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:46:23,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:46:23,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:46:23,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:46:23,346 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2025-01-09 22:46:23,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:46:23,415 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2025-01-09 22:46:23,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:46:23,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2025-01-09 22:46:23,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:46:23,417 INFO L225 Difference]: With dead ends: 28 [2025-01-09 22:46:23,418 INFO L226 Difference]: Without dead ends: 28 [2025-01-09 22:46:23,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:46:23,419 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:46:23,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 19 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:46:23,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-01-09 22:46:23,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2025-01-09 22:46:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 21 states have internal predecessors, (23), 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) [2025-01-09 22:46:23,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2025-01-09 22:46:23,426 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 4 [2025-01-09 22:46:23,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:46:23,426 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2025-01-09 22:46:23,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2025-01-09 22:46:23,426 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2025-01-09 22:46:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-09 22:46:23,427 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:46:23,427 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:46:23,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 22:46:23,427 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2025-01-09 22:46:23,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:46:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash 234204426, now seen corresponding path program 1 times [2025-01-09 22:46:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:46:23,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893209962] [2025-01-09 22:46:23,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:23,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:46:23,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 22:46:23,457 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 22:46:23,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:23,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 22:46:23,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:46:23,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893209962] [2025-01-09 22:46:23,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893209962] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:46:23,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:46:23,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 22:46:23,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294331675] [2025-01-09 22:46:23,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:46:23,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 22:46:23,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:46:23,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 22:46:23,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:46:23,565 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2025-01-09 22:46:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:46:23,591 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2025-01-09 22:46:23,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:46:23,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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 9 [2025-01-09 22:46:23,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:46:23,592 INFO L225 Difference]: With dead ends: 27 [2025-01-09 22:46:23,592 INFO L226 Difference]: Without dead ends: 27 [2025-01-09 22:46:23,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:46:23,602 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:46:23,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 25 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:46:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-01-09 22:46:23,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2025-01-09 22:46:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 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) [2025-01-09 22:46:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2025-01-09 22:46:23,604 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2025-01-09 22:46:23,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:46:23,605 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2025-01-09 22:46:23,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 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) [2025-01-09 22:46:23,605 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2025-01-09 22:46:23,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-09 22:46:23,605 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:46:23,605 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:46:23,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 22:46:23,605 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2025-01-09 22:46:23,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:46:23,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2137840625, now seen corresponding path program 1 times [2025-01-09 22:46:23,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:46:23,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99802395] [2025-01-09 22:46:23,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:23,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:46:23,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 22:46:23,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 22:46:23,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:23,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:23,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:46:23,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:46:23,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99802395] [2025-01-09 22:46:23,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99802395] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:46:23,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516343061] [2025-01-09 22:46:23,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:23,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:23,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:46:23,680 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) [2025-01-09 22:46:23,682 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 [2025-01-09 22:46:23,711 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-09 22:46:23,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-09 22:46:23,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:23,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:23,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 22:46:23,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:46:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 22:46:23,799 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:46:23,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516343061] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:46:23,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 22:46:23,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2025-01-09 22:46:23,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741968387] [2025-01-09 22:46:23,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:46:23,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:46:23,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:46:23,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:46:23,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-09 22:46:23,800 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2025-01-09 22:46:23,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:46:23,827 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2025-01-09 22:46:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:46:23,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 12 [2025-01-09 22:46:23,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:46:23,828 INFO L225 Difference]: With dead ends: 35 [2025-01-09 22:46:23,828 INFO L226 Difference]: Without dead ends: 35 [2025-01-09 22:46:23,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-09 22:46:23,828 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 30 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:46:23,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 41 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:46:23,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-01-09 22:46:23,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 23. [2025-01-09 22:46:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) internal successors, (25), 22 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) [2025-01-09 22:46:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2025-01-09 22:46:23,830 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2025-01-09 22:46:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:46:23,831 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2025-01-09 22:46:23,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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) [2025-01-09 22:46:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2025-01-09 22:46:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-09 22:46:23,831 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:46:23,831 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:46:23,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 22:46:24,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:24,037 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2025-01-09 22:46:24,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:46:24,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1470287504, now seen corresponding path program 1 times [2025-01-09 22:46:24,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:46:24,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181816217] [2025-01-09 22:46:24,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:24,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:46:24,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 22:46:24,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 22:46:24,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:24,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 22:46:24,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:46:24,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181816217] [2025-01-09 22:46:24,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181816217] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:46:24,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:46:24,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:46:24,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873150842] [2025-01-09 22:46:24,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:46:24,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 22:46:24,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:46:24,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 22:46:24,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 22:46:24,081 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2025-01-09 22:46:24,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:46:24,085 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2025-01-09 22:46:24,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 22:46:24,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2025-01-09 22:46:24,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:46:24,085 INFO L225 Difference]: With dead ends: 20 [2025-01-09 22:46:24,086 INFO L226 Difference]: Without dead ends: 20 [2025-01-09 22:46:24,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 22:46:24,086 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:46:24,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:46:24,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-01-09 22:46:24,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-01-09 22:46:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 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) [2025-01-09 22:46:24,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2025-01-09 22:46:24,088 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 14 [2025-01-09 22:46:24,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:46:24,088 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2025-01-09 22:46:24,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2025-01-09 22:46:24,088 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2025-01-09 22:46:24,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-09 22:46:24,089 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:46:24,089 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:46:24,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 22:46:24,089 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2025-01-09 22:46:24,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:46:24,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1470279527, now seen corresponding path program 1 times [2025-01-09 22:46:24,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:46:24,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093145129] [2025-01-09 22:46:24,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:24,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:46:24,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 22:46:24,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 22:46:24,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:24,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:46:24,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:46:24,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093145129] [2025-01-09 22:46:24,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093145129] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:46:24,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846184357] [2025-01-09 22:46:24,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:24,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:24,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:46:24,173 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) [2025-01-09 22:46:24,175 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 [2025-01-09 22:46:24,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 22:46:24,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 22:46:24,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:24,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:24,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 22:46:24,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:46:24,353 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#in~0#1.base_19| Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#in~0#1.base_19|) 0) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#in~0#1.base_19| 0)))) is different from true [2025-01-09 22:46:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 22:46:24,353 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:46:24,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846184357] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:46:24,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 22:46:24,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2025-01-09 22:46:24,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463838772] [2025-01-09 22:46:24,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:46:24,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:46:24,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:46:24,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:46:24,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2025-01-09 22:46:24,354 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-01-09 22:46:24,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:46:24,371 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2025-01-09 22:46:24,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:46:24,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2025-01-09 22:46:24,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:46:24,372 INFO L225 Difference]: With dead ends: 19 [2025-01-09 22:46:24,372 INFO L226 Difference]: Without dead ends: 16 [2025-01-09 22:46:24,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2025-01-09 22:46:24,372 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:46:24,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2025-01-09 22:46:24,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-01-09 22:46:24,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-01-09 22:46:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 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) [2025-01-09 22:46:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2025-01-09 22:46:24,374 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2025-01-09 22:46:24,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:46:24,374 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2025-01-09 22:46:24,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2025-01-09 22:46:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2025-01-09 22:46:24,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-09 22:46:24,374 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:46:24,374 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:46:24,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 22:46:24,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:24,575 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2025-01-09 22:46:24,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:46:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1659941106, now seen corresponding path program 1 times [2025-01-09 22:46:24,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:46:24,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286665946] [2025-01-09 22:46:24,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:24,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:46:24,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 22:46:24,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 22:46:24,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:24,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-09 22:46:24,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:46:24,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286665946] [2025-01-09 22:46:24,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286665946] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:46:24,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741482141] [2025-01-09 22:46:24,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:24,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:24,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:46:24,675 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) [2025-01-09 22:46:24,677 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 [2025-01-09 22:46:24,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-09 22:46:24,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 22:46:24,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:24,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:24,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 22:46:24,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:46:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 22:46:24,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:46:24,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2025-01-09 22:46:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 22:46:24,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741482141] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:46:24,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:46:24,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2025-01-09 22:46:24,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854721559] [2025-01-09 22:46:24,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:46:24,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 22:46:24,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:46:24,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 22:46:24,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2025-01-09 22:46:24,935 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 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) [2025-01-09 22:46:25,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:46:25,078 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2025-01-09 22:46:25,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 22:46:25,078 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 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 15 [2025-01-09 22:46:25,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:46:25,079 INFO L225 Difference]: With dead ends: 33 [2025-01-09 22:46:25,079 INFO L226 Difference]: Without dead ends: 33 [2025-01-09 22:46:25,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2025-01-09 22:46:25,080 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 86 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:46:25,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 26 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:46:25,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-01-09 22:46:25,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2025-01-09 22:46:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 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) [2025-01-09 22:46:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2025-01-09 22:46:25,082 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 15 [2025-01-09 22:46:25,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:46:25,083 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2025-01-09 22:46:25,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 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) [2025-01-09 22:46:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2025-01-09 22:46:25,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-09 22:46:25,083 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:46:25,083 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:46:25,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 22:46:25,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:25,288 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2025-01-09 22:46:25,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:46:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash -568114417, now seen corresponding path program 2 times [2025-01-09 22:46:25,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:46:25,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348772712] [2025-01-09 22:46:25,289 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:46:25,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:46:25,297 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-09 22:46:25,306 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 22:46:25,306 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:46:25,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 22:46:25,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:46:25,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348772712] [2025-01-09 22:46:25,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348772712] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:46:25,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510553174] [2025-01-09 22:46:25,386 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:46:25,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:25,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:46:25,392 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) [2025-01-09 22:46:25,394 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 [2025-01-09 22:46:25,427 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-01-09 22:46:25,448 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 22:46:25,448 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:46:25,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:25,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 22:46:25,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:46:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 22:46:25,670 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:46:25,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2025-01-09 22:46:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-09 22:46:25,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510553174] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:46:25,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:46:25,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 23 [2025-01-09 22:46:25,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249541018] [2025-01-09 22:46:25,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:46:25,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 22:46:25,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:46:25,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 22:46:25,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2025-01-09 22:46:25,919 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 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) [2025-01-09 22:46:26,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:46:26,215 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2025-01-09 22:46:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 22:46:26,215 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 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 30 [2025-01-09 22:46:26,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:46:26,216 INFO L225 Difference]: With dead ends: 51 [2025-01-09 22:46:26,216 INFO L226 Difference]: Without dead ends: 51 [2025-01-09 22:46:26,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=691, Unknown=0, NotChecked=0, Total=930 [2025-01-09 22:46:26,218 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 88 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:46:26,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 85 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:46:26,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-01-09 22:46:26,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2025-01-09 22:46:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 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) [2025-01-09 22:46:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2025-01-09 22:46:26,223 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 30 [2025-01-09 22:46:26,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:46:26,223 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2025-01-09 22:46:26,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 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) [2025-01-09 22:46:26,223 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2025-01-09 22:46:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-01-09 22:46:26,224 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:46:26,224 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:46:26,232 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 [2025-01-09 22:46:26,424 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,SelfDestructingSolverStorable7 [2025-01-09 22:46:26,425 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2025-01-09 22:46:26,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:46:26,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2020460239, now seen corresponding path program 3 times [2025-01-09 22:46:26,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:46:26,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086733996] [2025-01-09 22:46:26,426 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:46:26,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:46:26,442 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 11 equivalence classes. [2025-01-09 22:46:26,458 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 48 statements. [2025-01-09 22:46:26,458 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 22:46:26,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:26,704 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2025-01-09 22:46:26,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:46:26,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086733996] [2025-01-09 22:46:26,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086733996] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:46:26,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557058819] [2025-01-09 22:46:26,705 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:46:26,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:26,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:46:26,707 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) [2025-01-09 22:46:26,709 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 [2025-01-09 22:46:26,758 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 11 equivalence classes. [2025-01-09 22:46:26,778 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 48 statements. [2025-01-09 22:46:26,778 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 22:46:26,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:26,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 22:46:26,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:46:26,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:46:26,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-09 22:46:27,015 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-09 22:46:27,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2025-01-09 22:46:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2025-01-09 22:46:27,117 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:46:27,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2025-01-09 22:46:27,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2025-01-09 22:46:27,509 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2025-01-09 22:46:27,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557058819] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:46:27,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:46:27,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2025-01-09 22:46:27,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158435645] [2025-01-09 22:46:27,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:46:27,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 22:46:27,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:46:27,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 22:46:27,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2025-01-09 22:46:27,510 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 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) [2025-01-09 22:46:27,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:46:27,641 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2025-01-09 22:46:27,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 22:46:27,642 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 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 48 [2025-01-09 22:46:27,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:46:27,642 INFO L225 Difference]: With dead ends: 48 [2025-01-09 22:46:27,642 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 22:46:27,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2025-01-09 22:46:27,643 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:46:27,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 31 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:46:27,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 22:46:27,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 22:46:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2025-01-09 22:46:27,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 22:46:27,644 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2025-01-09 22:46:27,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:46:27,644 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 22:46:27,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 16 states have internal predecessors, (43), 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) [2025-01-09 22:46:27,644 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 22:46:27,645 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 22:46:27,646 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2025-01-09 22:46:27,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2025-01-09 22:46:27,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2025-01-09 22:46:27,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2025-01-09 22:46:27,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2025-01-09 22:46:27,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2025-01-09 22:46:27,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2025-01-09 22:46:27,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2025-01-09 22:46:27,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2025-01-09 22:46:27,647 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2025-01-09 22:46:27,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 22:46:27,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:27,851 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2025-01-09 22:46:27,853 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 22:46:27,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 10:46:27 BoogieIcfgContainer [2025-01-09 22:46:27,855 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 22:46:27,855 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 22:46:27,855 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 22:46:27,855 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 22:46:27,856 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:46:22" (3/4) ... [2025-01-09 22:46:27,857 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 22:46:27,863 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-01-09 22:46:27,864 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-01-09 22:46:27,864 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-09 22:46:27,864 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 22:46:27,920 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 22:46:27,921 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 22:46:27,921 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 22:46:27,921 INFO L158 Benchmark]: Toolchain (without parser) took 5578.95ms. Allocated memory was 201.3MB in the beginning and 427.8MB in the end (delta: 226.5MB). Free memory was 172.5MB in the beginning and 335.1MB in the end (delta: -162.7MB). Peak memory consumption was 60.8MB. Max. memory is 16.1GB. [2025-01-09 22:46:27,921 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:46:27,921 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.50ms. Allocated memory was 201.3MB in the beginning and 142.6MB in the end (delta: -58.7MB). Free memory was 172.0MB in the beginning and 102.8MB in the end (delta: 69.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 22:46:27,922 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.97ms. Allocated memory is still 142.6MB. Free memory was 102.8MB in the beginning and 101.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:46:27,922 INFO L158 Benchmark]: Boogie Preprocessor took 35.92ms. Allocated memory is still 142.6MB. Free memory was 101.4MB in the beginning and 100.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:46:27,922 INFO L158 Benchmark]: RCFGBuilder took 216.33ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 87.5MB in the end (delta: 12.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 22:46:27,922 INFO L158 Benchmark]: TraceAbstraction took 5046.17ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 86.6MB in the beginning and 339.3MB in the end (delta: -252.7MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2025-01-09 22:46:27,922 INFO L158 Benchmark]: Witness Printer took 65.41ms. Allocated memory is still 427.8MB. Free memory was 339.3MB in the beginning and 335.1MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:46:27,923 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 187.50ms. Allocated memory was 201.3MB in the beginning and 142.6MB in the end (delta: -58.7MB). Free memory was 172.0MB in the beginning and 102.8MB in the end (delta: 69.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.97ms. Allocated memory is still 142.6MB. Free memory was 102.8MB in the beginning and 101.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.92ms. Allocated memory is still 142.6MB. Free memory was 101.4MB in the beginning and 100.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 216.33ms. Allocated memory is still 142.6MB. Free memory was 100.0MB in the beginning and 87.5MB in the end (delta: 12.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5046.17ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 86.6MB in the beginning and 339.3MB in the end (delta: -252.7MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. * Witness Printer took 65.41ms. Allocated memory is still 427.8MB. Free memory was 339.3MB in the beginning and 335.1MB in the end (delta: 4.1MB). There was no memory consumed. 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 9, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 287 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 287 mSDsluCounter, 286 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 16 IncrementalHoareTripleChecker+Unchecked, 179 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 533 IncrementalHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 107 mSDtfsCounter, 533 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=8, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 28 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 269 NumberOfCodeBlocks, 203 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 345 ConstructedInterpolants, 1 QuantifiedInterpolants, 3972 SizeOfPredicates, 7 NumberOfNonLiveVariables, 543 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 17 InterpolantComputations, 6 PerfectInterpolantSequences, 472/651 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-01-09 22:46:27,936 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 Result: TRUE