./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/loops/string-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/loops/string-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7c71ebd98a3b6e7de0397eeeb86fda8d96b2d4c8ea0b8e1766ce392ff80613de --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:43:44,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:43:44,110 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 10:43:44,114 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:43:44,114 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:43:44,128 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:43:44,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:43:44,128 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:43:44,128 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:43:44,128 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:43:44,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:43:44,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:43:44,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:43:44,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:43:44,129 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:43:44,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:43:44,129 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:43:44,129 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:43:44,129 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:43:44,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:43:44,130 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:43:44,130 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:43:44,130 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:43:44,130 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:43:44,130 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:43:44,130 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:43:44,130 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:43:44,130 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:43:44,130 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:43:44,130 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:43:44,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:43:44,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:43:44,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:43:44,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:43:44,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:43:44,131 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:43:44,131 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:43:44,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:43:44,131 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:43:44,131 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:43:44,131 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:43:44,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:43:44,131 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 -> 7c71ebd98a3b6e7de0397eeeb86fda8d96b2d4c8ea0b8e1766ce392ff80613de [2025-02-06 10:43:44,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:43:44,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:43:44,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:43:44,299 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:43:44,299 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:43:44,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/string-1.i [2025-02-06 10:43:45,352 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bc0fcb0f5/3fc7d310b9774b36a1327f16072cfec3/FLAG77c9226a6 [2025-02-06 10:43:45,546 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:43:45,547 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loops/string-1.i [2025-02-06 10:43:45,552 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bc0fcb0f5/3fc7d310b9774b36a1327f16072cfec3/FLAG77c9226a6 [2025-02-06 10:43:45,581 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bc0fcb0f5/3fc7d310b9774b36a1327f16072cfec3 [2025-02-06 10:43:45,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:43:45,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:43:45,589 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:43:45,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:43:45,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:43:45,595 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:43:45" (1/1) ... [2025-02-06 10:43:45,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ee5f46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45, skipping insertion in model container [2025-02-06 10:43:45,597 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:43:45" (1/1) ... [2025-02-06 10:43:45,606 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:43:45,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:43:45,720 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:43:45,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:43:45,744 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:43:45,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45 WrapperNode [2025-02-06 10:43:45,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:43:45,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:43:45,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:43:45,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:43:45,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45" (1/1) ... [2025-02-06 10:43:45,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45" (1/1) ... [2025-02-06 10:43:45,765 INFO L138 Inliner]: procedures = 17, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 114 [2025-02-06 10:43:45,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:43:45,767 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:43:45,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:43:45,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:43:45,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45" (1/1) ... [2025-02-06 10:43:45,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45" (1/1) ... [2025-02-06 10:43:45,774 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45" (1/1) ... [2025-02-06 10:43:45,785 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 4, 4]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-02-06 10:43:45,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45" (1/1) ... [2025-02-06 10:43:45,786 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45" (1/1) ... [2025-02-06 10:43:45,789 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45" (1/1) ... [2025-02-06 10:43:45,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45" (1/1) ... [2025-02-06 10:43:45,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45" (1/1) ... [2025-02-06 10:43:45,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45" (1/1) ... [2025-02-06 10:43:45,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:43:45,792 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:43:45,792 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:43:45,792 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:43:45,792 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45" (1/1) ... [2025-02-06 10:43:45,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:43:45,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:45,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 10:43:45,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 10:43:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 10:43:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 10:43:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 10:43:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 10:43:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 10:43:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 10:43:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 10:43:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 10:43:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:43:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:43:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 10:43:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 10:43:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 10:43:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:43:45,900 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:43:45,901 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:43:46,048 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L30: call ULTIMATE.dealloc(main_~#string_A~0#1.base, main_~#string_A~0#1.offset);havoc main_~#string_A~0#1.base, main_~#string_A~0#1.offset;call ULTIMATE.dealloc(main_~#string_B~0#1.base, main_~#string_B~0#1.offset);havoc main_~#string_B~0#1.base, main_~#string_B~0#1.offset; [2025-02-06 10:43:46,056 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2025-02-06 10:43:46,056 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:43:46,062 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:43:46,062 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:43:46,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:43:46 BoogieIcfgContainer [2025-02-06 10:43:46,063 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:43:46,066 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:43:46,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:43:46,069 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:43:46,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:43:45" (1/3) ... [2025-02-06 10:43:46,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c720aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:43:46, skipping insertion in model container [2025-02-06 10:43:46,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:43:45" (2/3) ... [2025-02-06 10:43:46,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c720aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:43:46, skipping insertion in model container [2025-02-06 10:43:46,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:43:46" (3/3) ... [2025-02-06 10:43:46,072 INFO L128 eAbstractionObserver]: Analyzing ICFG string-1.i [2025-02-06 10:43:46,082 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:43:46,083 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG string-1.i that has 1 procedures, 51 locations, 1 initial locations, 5 loop locations, and 18 error locations. [2025-02-06 10:43:46,115 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:43:46,122 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;@58ede8f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:43:46,124 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-02-06 10:43:46,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 32 states have (on average 1.96875) internal successors, (63), 50 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:46,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 10:43:46,129 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:46,130 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 10:43:46,130 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:46,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:46,134 INFO L85 PathProgramCache]: Analyzing trace with hash 3292830, now seen corresponding path program 1 times [2025-02-06 10:43:46,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:46,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442804971] [2025-02-06 10:43:46,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:46,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:46,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 10:43:46,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 10:43:46,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:46,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:43:46,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:46,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442804971] [2025-02-06 10:43:46,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442804971] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:43:46,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:43:46,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:43:46,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273765016] [2025-02-06 10:43:46,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:43:46,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:43:46,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:46,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:43:46,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:43:46,361 INFO L87 Difference]: Start difference. First operand has 51 states, 32 states have (on average 1.96875) internal successors, (63), 50 states have internal predecessors, (63), 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) [2025-02-06 10:43:46,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:46,415 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2025-02-06 10:43:46,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:43:46,417 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 [2025-02-06 10:43:46,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:46,420 INFO L225 Difference]: With dead ends: 46 [2025-02-06 10:43:46,421 INFO L226 Difference]: Without dead ends: 44 [2025-02-06 10:43:46,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:43:46,426 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 40 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:46,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 35 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:43:46,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-06 10:43:46,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2025-02-06 10:43:46,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:46,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2025-02-06 10:43:46,450 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 4 [2025-02-06 10:43:46,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:46,450 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2025-02-06 10:43:46,450 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) [2025-02-06 10:43:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2025-02-06 10:43:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 10:43:46,451 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:46,451 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 10:43:46,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 10:43:46,451 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:46,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:46,452 INFO L85 PathProgramCache]: Analyzing trace with hash 3292831, now seen corresponding path program 1 times [2025-02-06 10:43:46,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:46,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921671658] [2025-02-06 10:43:46,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:46,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:46,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 10:43:46,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 10:43:46,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:46,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:46,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:43:46,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:46,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921671658] [2025-02-06 10:43:46,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921671658] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:43:46,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:43:46,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:43:46,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496883541] [2025-02-06 10:43:46,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:43:46,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:43:46,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:46,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:43:46,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:43:46,561 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. 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) [2025-02-06 10:43:46,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:46,604 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2025-02-06 10:43:46,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:43:46,605 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 [2025-02-06 10:43:46,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:46,605 INFO L225 Difference]: With dead ends: 47 [2025-02-06 10:43:46,605 INFO L226 Difference]: Without dead ends: 47 [2025-02-06 10:43:46,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:43:46,606 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:46,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 67 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:43:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-02-06 10:43:46,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2025-02-06 10:43:46,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.6875) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2025-02-06 10:43:46,609 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 4 [2025-02-06 10:43:46,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:46,610 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2025-02-06 10:43:46,610 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) [2025-02-06 10:43:46,610 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2025-02-06 10:43:46,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 10:43:46,610 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:46,610 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2025-02-06 10:43:46,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 10:43:46,610 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:46,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:46,611 INFO L85 PathProgramCache]: Analyzing trace with hash -687509432, now seen corresponding path program 1 times [2025-02-06 10:43:46,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:46,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339182273] [2025-02-06 10:43:46,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:46,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:46,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 10:43:46,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 10:43:46,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:46,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:43:46,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:46,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339182273] [2025-02-06 10:43:46,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339182273] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:43:46,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646979928] [2025-02-06 10:43:46,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:46,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:46,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:46,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:43:46,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 10:43:46,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 10:43:46,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 10:43:46,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:46,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:46,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 10:43:46,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:43:46,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-06 10:43:46,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:43:46,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2025-02-06 10:43:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:43:46,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:43:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:43:47,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646979928] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:43:47,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:43:47,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-02-06 10:43:47,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380673431] [2025-02-06 10:43:47,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:43:47,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:43:47,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:47,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:43:47,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:43:47,010 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:47,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:47,103 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2025-02-06 10:43:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:43:47,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-06 10:43:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:47,104 INFO L225 Difference]: With dead ends: 55 [2025-02-06 10:43:47,104 INFO L226 Difference]: Without dead ends: 55 [2025-02-06 10:43:47,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:43:47,104 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:47,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 97 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:43:47,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-06 10:43:47,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2025-02-06 10:43:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 54 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:47,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2025-02-06 10:43:47,108 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 7 [2025-02-06 10:43:47,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:47,108 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2025-02-06 10:43:47,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:47,108 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2025-02-06 10:43:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 10:43:47,108 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:47,108 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2025-02-06 10:43:47,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 10:43:47,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:47,309 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:47,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:47,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1105555994, now seen corresponding path program 1 times [2025-02-06 10:43:47,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:47,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343541245] [2025-02-06 10:43:47,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:47,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:47,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 10:43:47,331 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 10:43:47,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:47,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:43:47,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:47,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343541245] [2025-02-06 10:43:47,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343541245] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:43:47,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434131521] [2025-02-06 10:43:47,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:47,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:47,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:47,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:43:47,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 10:43:47,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 10:43:47,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 10:43:47,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:47,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:47,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:43:47,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:43:47,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:43:47,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:43:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:43:47,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434131521] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:43:47,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:43:47,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-06 10:43:47,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752876218] [2025-02-06 10:43:47,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:43:47,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:43:47,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:47,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:43:47,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:43:47,488 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 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) [2025-02-06 10:43:47,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:47,570 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2025-02-06 10:43:47,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:43:47,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 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) Word has length 10 [2025-02-06 10:43:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:47,571 INFO L225 Difference]: With dead ends: 104 [2025-02-06 10:43:47,571 INFO L226 Difference]: Without dead ends: 104 [2025-02-06 10:43:47,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:43:47,571 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 98 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:47,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 118 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:43:47,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-02-06 10:43:47,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 70. [2025-02-06 10:43:47,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 69 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:47,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2025-02-06 10:43:47,575 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 86 transitions. Word has length 10 [2025-02-06 10:43:47,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:47,575 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 86 transitions. [2025-02-06 10:43:47,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 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) [2025-02-06 10:43:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 86 transitions. [2025-02-06 10:43:47,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-06 10:43:47,576 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:47,576 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2025-02-06 10:43:47,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 10:43:47,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:47,780 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:47,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:47,781 INFO L85 PathProgramCache]: Analyzing trace with hash -444818081, now seen corresponding path program 2 times [2025-02-06 10:43:47,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:47,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558016096] [2025-02-06 10:43:47,781 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:43:47,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:47,790 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 10:43:47,800 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 10:43:47,801 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:43:47,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:43:48,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:48,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558016096] [2025-02-06 10:43:48,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558016096] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:43:48,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012206512] [2025-02-06 10:43:48,055 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:43:48,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:48,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:48,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:43:48,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 10:43:48,096 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 10:43:48,108 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 10:43:48,108 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:43:48,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:48,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 10:43:48,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:43:48,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-06 10:43:48,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:43:48,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2025-02-06 10:43:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:43:48,331 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:43:48,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012206512] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:43:48,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:43:48,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2025-02-06 10:43:48,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650407605] [2025-02-06 10:43:48,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:43:48,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:43:48,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:48,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:43:48,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:43:48,332 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:48,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:48,422 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2025-02-06 10:43:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:43:48,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-06 10:43:48,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:48,423 INFO L225 Difference]: With dead ends: 69 [2025-02-06 10:43:48,423 INFO L226 Difference]: Without dead ends: 69 [2025-02-06 10:43:48,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:43:48,423 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:48,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 65 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:43:48,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-02-06 10:43:48,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2025-02-06 10:43:48,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 56 states have (on average 1.5178571428571428) internal successors, (85), 68 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2025-02-06 10:43:48,431 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 16 [2025-02-06 10:43:48,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:48,431 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2025-02-06 10:43:48,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:48,431 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2025-02-06 10:43:48,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-06 10:43:48,431 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:48,431 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1] [2025-02-06 10:43:48,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 10:43:48,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:48,632 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:48,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:48,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1601332829, now seen corresponding path program 2 times [2025-02-06 10:43:48,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:48,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004208023] [2025-02-06 10:43:48,632 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:43:48,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:48,642 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 10:43:48,644 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 19 statements. [2025-02-06 10:43:48,644 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:43:48,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:48,688 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:48,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:48,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004208023] [2025-02-06 10:43:48,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004208023] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:43:48,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:43:48,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:43:48,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025364321] [2025-02-06 10:43:48,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:43:48,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:43:48,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:48,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:43:48,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:43:48,689 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:48,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:48,710 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2025-02-06 10:43:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:43:48,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 19 [2025-02-06 10:43:48,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:48,711 INFO L225 Difference]: With dead ends: 68 [2025-02-06 10:43:48,711 INFO L226 Difference]: Without dead ends: 68 [2025-02-06 10:43:48,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:43:48,712 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:48,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 33 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:43:48,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-06 10:43:48,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2025-02-06 10:43:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.5) internal successors, (84), 67 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2025-02-06 10:43:48,716 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 19 [2025-02-06 10:43:48,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:48,716 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2025-02-06 10:43:48,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:48,716 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2025-02-06 10:43:48,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:43:48,716 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:48,716 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:48,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 10:43:48,716 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:48,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:48,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1282556638, now seen corresponding path program 1 times [2025-02-06 10:43:48,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:48,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3659287] [2025-02-06 10:43:48,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:48,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:48,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:43:48,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:43:48,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:48,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:48,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:48,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3659287] [2025-02-06 10:43:48,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3659287] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:43:48,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:43:48,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:43:48,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280575695] [2025-02-06 10:43:48,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:43:48,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:43:48,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:48,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:43:48,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:43:48,848 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:48,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:48,886 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2025-02-06 10:43:48,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:43:48,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-06 10:43:48,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:48,886 INFO L225 Difference]: With dead ends: 67 [2025-02-06 10:43:48,887 INFO L226 Difference]: Without dead ends: 65 [2025-02-06 10:43:48,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:43:48,887 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 28 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:48,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 52 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:43:48,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-02-06 10:43:48,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2025-02-06 10:43:48,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 64 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:48,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2025-02-06 10:43:48,890 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 21 [2025-02-06 10:43:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:48,890 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2025-02-06 10:43:48,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:48,890 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2025-02-06 10:43:48,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-06 10:43:48,891 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:48,891 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:48,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 10:43:48,891 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:48,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:48,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1104546305, now seen corresponding path program 1 times [2025-02-06 10:43:48,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:48,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792113782] [2025-02-06 10:43:48,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:48,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:48,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 10:43:48,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 10:43:48,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:48,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:48,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:48,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792113782] [2025-02-06 10:43:48,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792113782] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:43:48,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:43:48,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:43:48,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324611368] [2025-02-06 10:43:48,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:43:48,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:43:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:48,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:43:48,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:43:48,940 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:48,956 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2025-02-06 10:43:48,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:43:48,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-02-06 10:43:48,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:48,957 INFO L225 Difference]: With dead ends: 61 [2025-02-06 10:43:48,957 INFO L226 Difference]: Without dead ends: 61 [2025-02-06 10:43:48,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:43:48,958 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:48,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:43:48,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-02-06 10:43:48,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2025-02-06 10:43:48,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 60 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2025-02-06 10:43:48,960 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 22 [2025-02-06 10:43:48,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:48,960 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2025-02-06 10:43:48,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2025-02-06 10:43:48,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-06 10:43:48,961 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:48,961 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:48,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 10:43:48,961 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:48,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:48,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1104546304, now seen corresponding path program 1 times [2025-02-06 10:43:48,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:48,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290478537] [2025-02-06 10:43:48,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:48,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:48,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 10:43:48,970 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 10:43:48,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:48,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:49,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:49,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290478537] [2025-02-06 10:43:49,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290478537] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:43:49,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:43:49,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:43:49,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670076870] [2025-02-06 10:43:49,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:43:49,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:43:49,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:49,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:43:49,056 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:43:49,056 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:49,112 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2025-02-06 10:43:49,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:43:49,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-02-06 10:43:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:49,113 INFO L225 Difference]: With dead ends: 64 [2025-02-06 10:43:49,113 INFO L226 Difference]: Without dead ends: 64 [2025-02-06 10:43:49,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:43:49,113 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 43 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:49,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 30 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:43:49,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-06 10:43:49,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2025-02-06 10:43:49,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 59 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:49,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2025-02-06 10:43:49,119 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 22 [2025-02-06 10:43:49,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:49,119 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2025-02-06 10:43:49,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2025-02-06 10:43:49,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-06 10:43:49,119 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:49,119 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:49,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 10:43:49,120 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:49,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:49,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1794491655, now seen corresponding path program 1 times [2025-02-06 10:43:49,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:49,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496379570] [2025-02-06 10:43:49,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:49,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:49,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 10:43:49,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 10:43:49,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:49,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:49,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:49,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496379570] [2025-02-06 10:43:49,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496379570] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:43:49,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248023040] [2025-02-06 10:43:49,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:49,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:49,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:49,246 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:43:49,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 10:43:49,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 10:43:49,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 10:43:49,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:49,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:49,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:43:49,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:43:49,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-06 10:43:49,386 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:49,386 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:43:49,490 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:49,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248023040] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:43:49,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:43:49,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 10:43:49,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336484054] [2025-02-06 10:43:49,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:43:49,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:43:49,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:49,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:43:49,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:43:49,492 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:49,609 INFO L93 Difference]: Finished difference Result 76 states and 97 transitions. [2025-02-06 10:43:49,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:43:49,610 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 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 25 [2025-02-06 10:43:49,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:49,610 INFO L225 Difference]: With dead ends: 76 [2025-02-06 10:43:49,610 INFO L226 Difference]: Without dead ends: 76 [2025-02-06 10:43:49,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:43:49,611 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 87 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:49,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 54 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:43:49,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-02-06 10:43:49,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 60. [2025-02-06 10:43:49,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 59 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2025-02-06 10:43:49,613 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 25 [2025-02-06 10:43:49,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:49,614 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2025-02-06 10:43:49,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:49,614 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2025-02-06 10:43:49,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-06 10:43:49,614 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:49,614 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:49,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 10:43:49,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 10:43:49,815 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:49,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:49,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1095970624, now seen corresponding path program 2 times [2025-02-06 10:43:49,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:49,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695255681] [2025-02-06 10:43:49,815 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:43:49,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:49,828 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-06 10:43:49,837 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 10:43:49,837 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:43:49,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:50,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:50,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695255681] [2025-02-06 10:43:50,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695255681] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:43:50,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030965824] [2025-02-06 10:43:50,024 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:43:50,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:50,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:50,026 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:43:50,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 10:43:50,066 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-06 10:43:50,083 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 10:43:50,083 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:43:50,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:50,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 10:43:50,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:43:50,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-06 10:43:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:50,257 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:43:50,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030965824] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:43:50,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:43:50,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2025-02-06 10:43:50,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706273684] [2025-02-06 10:43:50,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:43:50,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:43:50,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:50,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:43:50,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:43:50,258 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) [2025-02-06 10:43:50,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:50,378 INFO L93 Difference]: Finished difference Result 79 states and 104 transitions. [2025-02-06 10:43:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:43:50,378 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) Word has length 34 [2025-02-06 10:43:50,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:50,379 INFO L225 Difference]: With dead ends: 79 [2025-02-06 10:43:50,379 INFO L226 Difference]: Without dead ends: 79 [2025-02-06 10:43:50,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:43:50,379 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 55 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:50,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 28 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:43:50,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-02-06 10:43:50,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 59. [2025-02-06 10:43:50,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 58 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:50,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2025-02-06 10:43:50,382 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 34 [2025-02-06 10:43:50,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:50,382 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2025-02-06 10:43:50,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 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) [2025-02-06 10:43:50,382 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2025-02-06 10:43:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-06 10:43:50,382 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:50,382 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:50,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 10:43:50,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-06 10:43:50,587 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:50,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:50,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1011570847, now seen corresponding path program 1 times [2025-02-06 10:43:50,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:50,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083192958] [2025-02-06 10:43:50,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:50,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:50,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-06 10:43:50,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-06 10:43:50,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:50,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:50,674 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-02-06 10:43:50,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:50,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083192958] [2025-02-06 10:43:50,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083192958] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:43:50,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455736691] [2025-02-06 10:43:50,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:50,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:50,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:50,676 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:43:50,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 10:43:50,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-06 10:43:50,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-06 10:43:50,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:50,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:50,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 10:43:50,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:43:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:50,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:43:50,968 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 20 treesize of output 16 [2025-02-06 10:43:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:51,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455736691] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:43:51,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:43:51,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 18 [2025-02-06 10:43:51,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335614771] [2025-02-06 10:43:51,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:43:51,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 10:43:51,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:51,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 10:43:51,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2025-02-06 10:43:51,052 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand has 19 states, 18 states have (on average 4.0) internal successors, (72), 19 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:51,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:51,438 INFO L93 Difference]: Finished difference Result 96 states and 117 transitions. [2025-02-06 10:43:51,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 10:43:51,439 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.0) internal successors, (72), 19 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2025-02-06 10:43:51,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:51,439 INFO L225 Difference]: With dead ends: 96 [2025-02-06 10:43:51,439 INFO L226 Difference]: Without dead ends: 96 [2025-02-06 10:43:51,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 10:43:51,440 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 181 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:51,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 73 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:43:51,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-02-06 10:43:51,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 72. [2025-02-06 10:43:51,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.208955223880597) internal successors, (81), 71 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2025-02-06 10:43:51,443 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 40 [2025-02-06 10:43:51,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:51,443 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2025-02-06 10:43:51,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.0) internal successors, (72), 19 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:51,443 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2025-02-06 10:43:51,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-02-06 10:43:51,443 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:51,444 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:51,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 10:43:51,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 10:43:51,648 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:51,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash 5707323, now seen corresponding path program 1 times [2025-02-06 10:43:51,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:51,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409212803] [2025-02-06 10:43:51,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:51,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:51,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-06 10:43:51,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 10:43:51,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:51,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-06 10:43:51,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:51,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409212803] [2025-02-06 10:43:51,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409212803] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:43:51,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:43:51,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:43:51,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602386974] [2025-02-06 10:43:51,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:43:51,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:43:51,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:51,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:43:51,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:43:51,730 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:51,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:51,755 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2025-02-06 10:43:51,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:43:51,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 44 [2025-02-06 10:43:51,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:51,756 INFO L225 Difference]: With dead ends: 88 [2025-02-06 10:43:51,756 INFO L226 Difference]: Without dead ends: 88 [2025-02-06 10:43:51,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:43:51,756 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:51,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 41 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:43:51,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-02-06 10:43:51,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2025-02-06 10:43:51,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 75 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2025-02-06 10:43:51,758 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 44 [2025-02-06 10:43:51,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:51,759 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2025-02-06 10:43:51,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:51,759 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2025-02-06 10:43:51,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-06 10:43:51,759 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:51,760 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:51,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 10:43:51,760 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:51,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:51,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1226004161, now seen corresponding path program 1 times [2025-02-06 10:43:51,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:51,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213395733] [2025-02-06 10:43:51,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:51,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:51,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-06 10:43:51,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-06 10:43:51,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:51,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:51,890 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-06 10:43:51,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:51,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213395733] [2025-02-06 10:43:51,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213395733] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:43:51,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185867523] [2025-02-06 10:43:51,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:51,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:51,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:51,892 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:43:51,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 10:43:51,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-06 10:43:51,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-06 10:43:51,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:51,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:51,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:43:51,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:43:52,275 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:52,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:43:52,407 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 22 treesize of output 18 [2025-02-06 10:43:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:52,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185867523] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:43:52,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:43:52,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 24 [2025-02-06 10:43:52,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126347645] [2025-02-06 10:43:52,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:43:52,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 10:43:52,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:52,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 10:43:52,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:43:52,527 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 25 states, 24 states have (on average 3.6666666666666665) internal successors, (88), 25 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:53,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:53,223 INFO L93 Difference]: Finished difference Result 178 states and 231 transitions. [2025-02-06 10:43:53,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-06 10:43:53,223 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.6666666666666665) internal successors, (88), 25 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2025-02-06 10:43:53,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:53,224 INFO L225 Difference]: With dead ends: 178 [2025-02-06 10:43:53,224 INFO L226 Difference]: Without dead ends: 178 [2025-02-06 10:43:53,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=633, Invalid=1817, Unknown=0, NotChecked=0, Total=2450 [2025-02-06 10:43:53,225 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 478 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:53,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 192 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 10:43:53,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-02-06 10:43:53,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 115. [2025-02-06 10:43:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.3181818181818181) internal successors, (145), 114 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:53,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 145 transitions. [2025-02-06 10:43:53,228 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 145 transitions. Word has length 46 [2025-02-06 10:43:53,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:53,228 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 145 transitions. [2025-02-06 10:43:53,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.6666666666666665) internal successors, (88), 25 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:53,228 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 145 transitions. [2025-02-06 10:43:53,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-06 10:43:53,228 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:53,228 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:53,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 10:43:53,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:53,433 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:53,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:53,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1771860026, now seen corresponding path program 1 times [2025-02-06 10:43:53,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:53,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481637079] [2025-02-06 10:43:53,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:53,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:53,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-06 10:43:53,451 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-06 10:43:53,451 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:53,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-06 10:43:53,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:53,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481637079] [2025-02-06 10:43:53,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481637079] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:43:53,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354368066] [2025-02-06 10:43:53,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:53,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:53,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:53,567 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:43:53,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 10:43:53,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-06 10:43:53,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-06 10:43:53,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:53,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:53,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 10:43:53,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:43:53,754 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 26 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:53,754 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:43:53,811 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 22 treesize of output 18 [2025-02-06 10:43:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 26 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:53,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354368066] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:43:53,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:43:53,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 10, 10] total 22 [2025-02-06 10:43:53,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111583881] [2025-02-06 10:43:53,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:43:53,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 10:43:53,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:53,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 10:43:53,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2025-02-06 10:43:53,909 INFO L87 Difference]: Start difference. First operand 115 states and 145 transitions. Second operand has 23 states, 22 states have (on average 4.136363636363637) internal successors, (91), 23 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:54,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:54,517 INFO L93 Difference]: Finished difference Result 351 states and 551 transitions. [2025-02-06 10:43:54,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-06 10:43:54,517 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.136363636363637) internal successors, (91), 23 states have internal predecessors, (91), 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 47 [2025-02-06 10:43:54,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:54,518 INFO L225 Difference]: With dead ends: 351 [2025-02-06 10:43:54,518 INFO L226 Difference]: Without dead ends: 351 [2025-02-06 10:43:54,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=806, Invalid=1644, Unknown=0, NotChecked=0, Total=2450 [2025-02-06 10:43:54,520 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 296 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:54,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 71 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:43:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2025-02-06 10:43:54,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 151. [2025-02-06 10:43:54,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 146 states have (on average 1.321917808219178) internal successors, (193), 150 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:54,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 193 transitions. [2025-02-06 10:43:54,524 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 193 transitions. Word has length 47 [2025-02-06 10:43:54,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:54,525 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 193 transitions. [2025-02-06 10:43:54,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.136363636363637) internal successors, (91), 23 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:54,525 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 193 transitions. [2025-02-06 10:43:54,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-06 10:43:54,525 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:54,525 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:54,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 10:43:54,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-06 10:43:54,726 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:54,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:54,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1396370933, now seen corresponding path program 1 times [2025-02-06 10:43:54,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:54,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404450885] [2025-02-06 10:43:54,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:54,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:54,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-06 10:43:54,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 10:43:54,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:54,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-06 10:43:54,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:54,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404450885] [2025-02-06 10:43:54,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404450885] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:43:54,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:43:54,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:43:54,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597322313] [2025-02-06 10:43:54,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:43:54,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:43:54,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:54,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:43:54,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:43:54,848 INFO L87 Difference]: Start difference. First operand 151 states and 193 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:54,870 INFO L93 Difference]: Finished difference Result 155 states and 197 transitions. [2025-02-06 10:43:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:43:54,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 51 [2025-02-06 10:43:54,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:54,875 INFO L225 Difference]: With dead ends: 155 [2025-02-06 10:43:54,875 INFO L226 Difference]: Without dead ends: 144 [2025-02-06 10:43:54,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:43:54,876 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:54,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 108 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:43:54,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-02-06 10:43:54,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2025-02-06 10:43:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 140 states have (on average 1.2214285714285715) internal successors, (171), 143 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 171 transitions. [2025-02-06 10:43:54,878 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 171 transitions. Word has length 51 [2025-02-06 10:43:54,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:54,881 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 171 transitions. [2025-02-06 10:43:54,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:54,881 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 171 transitions. [2025-02-06 10:43:54,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-06 10:43:54,882 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:54,882 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:54,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 10:43:54,882 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:54,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:54,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1851157154, now seen corresponding path program 1 times [2025-02-06 10:43:54,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:54,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271160177] [2025-02-06 10:43:54,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:54,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:54,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-02-06 10:43:54,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 10:43:54,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:54,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2025-02-06 10:43:54,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:54,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271160177] [2025-02-06 10:43:54,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271160177] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:43:54,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:43:54,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:43:54,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017234461] [2025-02-06 10:43:54,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:43:54,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:43:54,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:54,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:43:54,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:43:54,982 INFO L87 Difference]: Start difference. First operand 144 states and 171 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:55,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:55,021 INFO L93 Difference]: Finished difference Result 149 states and 175 transitions. [2025-02-06 10:43:55,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:43:55,021 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 55 [2025-02-06 10:43:55,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:55,022 INFO L225 Difference]: With dead ends: 149 [2025-02-06 10:43:55,022 INFO L226 Difference]: Without dead ends: 149 [2025-02-06 10:43:55,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:43:55,023 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 13 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:55,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 33 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:43:55,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2025-02-06 10:43:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2025-02-06 10:43:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 143 states have (on average 1.2097902097902098) internal successors, (173), 146 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 173 transitions. [2025-02-06 10:43:55,028 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 173 transitions. Word has length 55 [2025-02-06 10:43:55,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:55,028 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 173 transitions. [2025-02-06 10:43:55,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:55,028 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 173 transitions. [2025-02-06 10:43:55,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-06 10:43:55,031 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:55,031 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:55,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 10:43:55,031 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:55,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:55,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1438448874, now seen corresponding path program 2 times [2025-02-06 10:43:55,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:55,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940212129] [2025-02-06 10:43:55,032 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:43:55,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:55,038 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 2 equivalence classes. [2025-02-06 10:43:55,049 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 10:43:55,052 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:43:55,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-06 10:43:55,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:55,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940212129] [2025-02-06 10:43:55,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940212129] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:43:55,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40187121] [2025-02-06 10:43:55,200 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:43:55,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:55,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:55,202 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:43:55,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 10:43:55,246 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 2 equivalence classes. [2025-02-06 10:43:55,268 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-02-06 10:43:55,268 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:43:55,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:55,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-06 10:43:55,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:43:55,340 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 15 treesize of output 1 [2025-02-06 10:43:55,564 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 65 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-06 10:43:55,564 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:43:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-06 10:43:55,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40187121] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:43:55,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:43:55,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 10] total 30 [2025-02-06 10:43:55,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199831413] [2025-02-06 10:43:55,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:43:55,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-06 10:43:55,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:55,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-06 10:43:55,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2025-02-06 10:43:55,682 INFO L87 Difference]: Start difference. First operand 147 states and 173 transitions. Second operand has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 30 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:56,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:56,399 INFO L93 Difference]: Finished difference Result 219 states and 258 transitions. [2025-02-06 10:43:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-06 10:43:56,400 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 30 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2025-02-06 10:43:56,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:56,401 INFO L225 Difference]: With dead ends: 219 [2025-02-06 10:43:56,401 INFO L226 Difference]: Without dead ends: 217 [2025-02-06 10:43:56,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=294, Invalid=1962, Unknown=0, NotChecked=0, Total=2256 [2025-02-06 10:43:56,402 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 200 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1549 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:56,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 928 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1549 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 10:43:56,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-02-06 10:43:56,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 177. [2025-02-06 10:43:56,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 174 states have (on average 1.235632183908046) internal successors, (215), 176 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:56,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 215 transitions. [2025-02-06 10:43:56,406 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 215 transitions. Word has length 55 [2025-02-06 10:43:56,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:56,406 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 215 transitions. [2025-02-06 10:43:56,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.933333333333333) internal successors, (88), 30 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:56,406 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 215 transitions. [2025-02-06 10:43:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-06 10:43:56,407 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:56,407 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:56,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 10:43:56,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 10:43:56,610 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:56,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:56,611 INFO L85 PathProgramCache]: Analyzing trace with hash 636722811, now seen corresponding path program 2 times [2025-02-06 10:43:56,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:56,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721386385] [2025-02-06 10:43:56,611 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:43:56,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:56,624 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-02-06 10:43:56,635 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-02-06 10:43:56,635 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:43:56,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:56,822 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-06 10:43:56,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:56,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721386385] [2025-02-06 10:43:56,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721386385] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:43:56,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225591415] [2025-02-06 10:43:56,823 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:43:56,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:56,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:56,828 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:43:56,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 10:43:56,875 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-02-06 10:43:56,895 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-02-06 10:43:56,895 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:43:56,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:56,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 10:43:56,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:43:57,037 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-06 10:43:57,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:43:57,146 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 [2025-02-06 10:43:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-06 10:43:57,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225591415] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:43:57,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:43:57,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-02-06 10:43:57,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424978115] [2025-02-06 10:43:57,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:43:57,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 10:43:57,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:57,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 10:43:57,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2025-02-06 10:43:57,189 INFO L87 Difference]: Start difference. First operand 177 states and 215 transitions. Second operand has 23 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:57,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:57,369 INFO L93 Difference]: Finished difference Result 385 states and 499 transitions. [2025-02-06 10:43:57,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:43:57,369 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 23 states have internal predecessors, (94), 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 56 [2025-02-06 10:43:57,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:57,370 INFO L225 Difference]: With dead ends: 385 [2025-02-06 10:43:57,371 INFO L226 Difference]: Without dead ends: 385 [2025-02-06 10:43:57,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2025-02-06 10:43:57,372 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 171 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:57,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 201 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:43:57,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2025-02-06 10:43:57,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 192. [2025-02-06 10:43:57,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 189 states have (on average 1.2380952380952381) internal successors, (234), 191 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:57,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 234 transitions. [2025-02-06 10:43:57,378 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 234 transitions. Word has length 56 [2025-02-06 10:43:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:57,378 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 234 transitions. [2025-02-06 10:43:57,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 23 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 234 transitions. [2025-02-06 10:43:57,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-06 10:43:57,379 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:57,379 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:57,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 10:43:57,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:57,580 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:57,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:57,581 INFO L85 PathProgramCache]: Analyzing trace with hash -442737645, now seen corresponding path program 1 times [2025-02-06 10:43:57,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:57,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841350686] [2025-02-06 10:43:57,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:57,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:57,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-06 10:43:57,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 10:43:57,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:57,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-02-06 10:43:57,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:57,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841350686] [2025-02-06 10:43:57,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841350686] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:43:57,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564921300] [2025-02-06 10:43:57,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:43:57,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:57,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:57,685 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:43:57,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 10:43:57,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-06 10:43:57,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 10:43:57,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:43:57,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:57,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 10:43:57,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:43:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-02-06 10:43:57,796 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:43:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2025-02-06 10:43:57,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564921300] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:43:57,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:43:57,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-02-06 10:43:57,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961082811] [2025-02-06 10:43:57,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:43:57,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 10:43:57,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:57,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 10:43:57,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-06 10:43:57,825 INFO L87 Difference]: Start difference. First operand 192 states and 234 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:57,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:57,872 INFO L93 Difference]: Finished difference Result 193 states and 231 transitions. [2025-02-06 10:43:57,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:43:57,872 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-02-06 10:43:57,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:57,873 INFO L225 Difference]: With dead ends: 193 [2025-02-06 10:43:57,873 INFO L226 Difference]: Without dead ends: 187 [2025-02-06 10:43:57,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:43:57,873 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:57,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 108 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:43:57,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2025-02-06 10:43:57,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 167. [2025-02-06 10:43:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 164 states have (on average 1.2378048780487805) internal successors, (203), 166 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:57,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 203 transitions. [2025-02-06 10:43:57,880 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 203 transitions. Word has length 58 [2025-02-06 10:43:57,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:57,880 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 203 transitions. [2025-02-06 10:43:57,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:57,880 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 203 transitions. [2025-02-06 10:43:57,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-06 10:43:57,880 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:57,880 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:57,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-06 10:43:58,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:58,081 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:58,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:58,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2033655686, now seen corresponding path program 3 times [2025-02-06 10:43:58,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:58,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370170796] [2025-02-06 10:43:58,082 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:43:58,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:58,088 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 59 statements into 6 equivalence classes. [2025-02-06 10:43:58,094 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 59 statements. [2025-02-06 10:43:58,095 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:43:58,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2025-02-06 10:43:58,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:58,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370170796] [2025-02-06 10:43:58,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370170796] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:43:58,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672230981] [2025-02-06 10:43:58,190 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:43:58,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:58,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:58,192 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:43:58,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 10:43:58,246 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 59 statements into 6 equivalence classes. [2025-02-06 10:43:58,256 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 23 of 59 statements. [2025-02-06 10:43:58,256 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:43:58,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:58,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:43:58,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:43:58,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-06 10:43:58,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-06 10:43:58,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:43:58,460 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 [2025-02-06 10:43:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2025-02-06 10:43:58,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:43:58,712 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 32 treesize of output 28 [2025-02-06 10:43:58,721 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2025-02-06 10:43:58,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 44 [2025-02-06 10:43:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2025-02-06 10:43:58,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672230981] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:43:58,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:43:58,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 20 [2025-02-06 10:43:58,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774732068] [2025-02-06 10:43:58,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:43:58,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 10:43:58,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:58,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 10:43:58,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2025-02-06 10:43:58,897 INFO L87 Difference]: Start difference. First operand 167 states and 203 transitions. Second operand has 21 states, 20 states have (on average 3.45) internal successors, (69), 21 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) [2025-02-06 10:43:59,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:59,060 INFO L93 Difference]: Finished difference Result 177 states and 217 transitions. [2025-02-06 10:43:59,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:43:59,061 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.45) internal successors, (69), 21 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 59 [2025-02-06 10:43:59,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:59,061 INFO L225 Difference]: With dead ends: 177 [2025-02-06 10:43:59,061 INFO L226 Difference]: Without dead ends: 159 [2025-02-06 10:43:59,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=543, Unknown=0, NotChecked=0, Total=756 [2025-02-06 10:43:59,062 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 97 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:59,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 36 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:43:59,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2025-02-06 10:43:59,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 115. [2025-02-06 10:43:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.2123893805309736) internal successors, (137), 114 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 137 transitions. [2025-02-06 10:43:59,065 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 137 transitions. Word has length 59 [2025-02-06 10:43:59,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:59,065 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 137 transitions. [2025-02-06 10:43:59,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.45) internal successors, (69), 21 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) [2025-02-06 10:43:59,066 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 137 transitions. [2025-02-06 10:43:59,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-02-06 10:43:59,066 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:59,066 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:59,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 10:43:59,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:59,272 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:59,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:59,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1742626844, now seen corresponding path program 2 times [2025-02-06 10:43:59,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:59,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157464133] [2025-02-06 10:43:59,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:43:59,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:59,278 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 61 statements into 2 equivalence classes. [2025-02-06 10:43:59,285 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 61 of 61 statements. [2025-02-06 10:43:59,285 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:43:59,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:59,354 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-02-06 10:43:59,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:59,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157464133] [2025-02-06 10:43:59,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157464133] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:43:59,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405242049] [2025-02-06 10:43:59,355 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:43:59,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:59,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:59,357 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:43:59,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 10:43:59,413 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 61 statements into 2 equivalence classes. [2025-02-06 10:43:59,434 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 61 of 61 statements. [2025-02-06 10:43:59,434 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:43:59,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:59,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:43:59,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:43:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-02-06 10:43:59,477 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:43:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-02-06 10:43:59,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405242049] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:43:59,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:43:59,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-02-06 10:43:59,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413940233] [2025-02-06 10:43:59,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:43:59,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:43:59,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:43:59,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:43:59,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:43:59,528 INFO L87 Difference]: Start difference. First operand 115 states and 137 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:59,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:43:59,589 INFO L93 Difference]: Finished difference Result 127 states and 149 transitions. [2025-02-06 10:43:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:43:59,591 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 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 61 [2025-02-06 10:43:59,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:43:59,591 INFO L225 Difference]: With dead ends: 127 [2025-02-06 10:43:59,591 INFO L226 Difference]: Without dead ends: 124 [2025-02-06 10:43:59,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:43:59,594 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 39 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:43:59,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 91 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:43:59,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-02-06 10:43:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2025-02-06 10:43:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.1967213114754098) internal successors, (146), 123 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:59,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 146 transitions. [2025-02-06 10:43:59,599 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 146 transitions. Word has length 61 [2025-02-06 10:43:59,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:43:59,599 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 146 transitions. [2025-02-06 10:43:59,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:43:59,599 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 146 transitions. [2025-02-06 10:43:59,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-06 10:43:59,599 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:43:59,599 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:43:59,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 10:43:59,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:59,800 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:43:59,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:43:59,801 INFO L85 PathProgramCache]: Analyzing trace with hash 424019057, now seen corresponding path program 3 times [2025-02-06 10:43:59,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:43:59,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263255675] [2025-02-06 10:43:59,801 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:43:59,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:43:59,812 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 6 equivalence classes. [2025-02-06 10:43:59,815 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 34 of 64 statements. [2025-02-06 10:43:59,815 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:43:59,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-02-06 10:43:59,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:43:59,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263255675] [2025-02-06 10:43:59,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263255675] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:43:59,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341041882] [2025-02-06 10:43:59,871 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:43:59,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:43:59,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:43:59,873 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:43:59,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 10:43:59,931 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 6 equivalence classes. [2025-02-06 10:43:59,945 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 34 of 64 statements. [2025-02-06 10:43:59,945 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:43:59,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:43:59,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:43:59,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:44:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-02-06 10:44:00,091 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:44:00,295 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 [2025-02-06 10:44:00,363 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-02-06 10:44:00,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341041882] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:44:00,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:44:00,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2025-02-06 10:44:00,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078958932] [2025-02-06 10:44:00,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:44:00,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 10:44:00,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:44:00,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 10:44:00,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:44:00,364 INFO L87 Difference]: Start difference. First operand 124 states and 146 transitions. Second operand has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:00,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:44:00,554 INFO L93 Difference]: Finished difference Result 160 states and 190 transitions. [2025-02-06 10:44:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:44:00,555 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-02-06 10:44:00,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:44:00,559 INFO L225 Difference]: With dead ends: 160 [2025-02-06 10:44:00,559 INFO L226 Difference]: Without dead ends: 160 [2025-02-06 10:44:00,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=289, Unknown=0, NotChecked=0, Total=462 [2025-02-06 10:44:00,559 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 35 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:44:00,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 57 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:44:00,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2025-02-06 10:44:00,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2025-02-06 10:44:00,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.2101910828025477) internal successors, (190), 158 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:00,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 190 transitions. [2025-02-06 10:44:00,566 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 190 transitions. Word has length 64 [2025-02-06 10:44:00,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:44:00,566 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 190 transitions. [2025-02-06 10:44:00,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:00,566 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 190 transitions. [2025-02-06 10:44:00,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-06 10:44:00,566 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:44:00,567 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:44:00,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 10:44:00,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-02-06 10:44:00,767 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:44:00,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:44:00,767 INFO L85 PathProgramCache]: Analyzing trace with hash 259659045, now seen corresponding path program 1 times [2025-02-06 10:44:00,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:44:00,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890756118] [2025-02-06 10:44:00,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:44:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:44:00,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-06 10:44:00,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-06 10:44:00,796 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:44:00,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:44:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-02-06 10:44:00,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:44:00,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890756118] [2025-02-06 10:44:00,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890756118] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:44:00,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685309132] [2025-02-06 10:44:00,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:44:00,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:44:00,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:44:00,919 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:44:00,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 10:44:00,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-06 10:44:00,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-06 10:44:00,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:44:00,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:44:00,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 10:44:01,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:44:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 26 proven. 12 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-02-06 10:44:01,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:44:01,256 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 22 treesize of output 18 [2025-02-06 10:44:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 26 proven. 12 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-02-06 10:44:01,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685309132] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:44:01,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:44:01,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 10, 10] total 22 [2025-02-06 10:44:01,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632645699] [2025-02-06 10:44:01,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:44:01,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 10:44:01,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:44:01,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 10:44:01,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2025-02-06 10:44:01,353 INFO L87 Difference]: Start difference. First operand 159 states and 190 transitions. Second operand has 23 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:01,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:44:01,791 INFO L93 Difference]: Finished difference Result 246 states and 303 transitions. [2025-02-06 10:44:01,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-06 10:44:01,791 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 23 states have internal predecessors, (115), 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 65 [2025-02-06 10:44:01,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:44:01,792 INFO L225 Difference]: With dead ends: 246 [2025-02-06 10:44:01,792 INFO L226 Difference]: Without dead ends: 246 [2025-02-06 10:44:01,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=639, Invalid=1341, Unknown=0, NotChecked=0, Total=1980 [2025-02-06 10:44:01,794 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 260 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:44:01,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 50 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:44:01,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2025-02-06 10:44:01,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 180. [2025-02-06 10:44:01,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 178 states have (on average 1.202247191011236) internal successors, (214), 179 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:01,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 214 transitions. [2025-02-06 10:44:01,799 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 214 transitions. Word has length 65 [2025-02-06 10:44:01,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:44:01,799 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 214 transitions. [2025-02-06 10:44:01,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.2272727272727275) internal successors, (115), 23 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:01,799 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 214 transitions. [2025-02-06 10:44:01,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-06 10:44:01,799 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:44:01,799 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:44:01,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 10:44:02,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-06 10:44:02,001 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:44:02,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:44:02,001 INFO L85 PathProgramCache]: Analyzing trace with hash 728177129, now seen corresponding path program 4 times [2025-02-06 10:44:02,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:44:02,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754566455] [2025-02-06 10:44:02,001 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:44:02,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:44:02,009 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 72 statements into 2 equivalence classes. [2025-02-06 10:44:02,014 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 61 of 72 statements. [2025-02-06 10:44:02,014 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 10:44:02,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:44:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2025-02-06 10:44:02,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:44:02,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754566455] [2025-02-06 10:44:02,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754566455] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:44:02,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461744966] [2025-02-06 10:44:02,125 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:44:02,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:44:02,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:44:02,127 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:44:02,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 10:44:02,184 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 72 statements into 2 equivalence classes. [2025-02-06 10:44:02,204 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 61 of 72 statements. [2025-02-06 10:44:02,204 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-06 10:44:02,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:44:02,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 10:44:02,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:44:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-02-06 10:44:02,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:44:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2025-02-06 10:44:02,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461744966] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:44:02,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:44:02,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2025-02-06 10:44:02,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240541289] [2025-02-06 10:44:02,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:44:02,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 10:44:02,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:44:02,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 10:44:02,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:44:02,329 INFO L87 Difference]: Start difference. First operand 180 states and 214 transitions. Second operand has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:44:02,418 INFO L93 Difference]: Finished difference Result 168 states and 197 transitions. [2025-02-06 10:44:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 10:44:02,419 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2025-02-06 10:44:02,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:44:02,419 INFO L225 Difference]: With dead ends: 168 [2025-02-06 10:44:02,419 INFO L226 Difference]: Without dead ends: 143 [2025-02-06 10:44:02,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 134 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2025-02-06 10:44:02,420 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 2 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:44:02,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 135 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:44:02,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-02-06 10:44:02,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2025-02-06 10:44:02,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 141 states have (on average 1.2056737588652482) internal successors, (170), 142 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2025-02-06 10:44:02,422 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 72 [2025-02-06 10:44:02,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:44:02,422 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2025-02-06 10:44:02,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.4375) internal successors, (71), 16 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:02,422 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2025-02-06 10:44:02,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-06 10:44:02,423 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:44:02,423 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:44:02,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-06 10:44:02,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:44:02,624 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:44:02,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:44:02,625 INFO L85 PathProgramCache]: Analyzing trace with hash 680057394, now seen corresponding path program 5 times [2025-02-06 10:44:02,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:44:02,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130655545] [2025-02-06 10:44:02,625 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:44:02,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:44:02,634 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 75 statements into 6 equivalence classes. [2025-02-06 10:44:02,653 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 10:44:02,653 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-06 10:44:02,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:44:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2025-02-06 10:44:02,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:44:02,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130655545] [2025-02-06 10:44:02,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130655545] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:44:02,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546989760] [2025-02-06 10:44:02,737 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:44:02,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:44:02,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:44:02,742 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:44:02,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 10:44:02,809 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 75 statements into 6 equivalence classes. [2025-02-06 10:44:02,873 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 10:44:02,873 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-06 10:44:02,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:44:02,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 10:44:02,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:44:03,084 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 11 proven. 25 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2025-02-06 10:44:03,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:44:03,193 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 11 proven. 25 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2025-02-06 10:44:03,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546989760] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:44:03,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:44:03,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 25 [2025-02-06 10:44:03,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153374980] [2025-02-06 10:44:03,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:44:03,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 10:44:03,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:44:03,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 10:44:03,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:44:03,195 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:03,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:44:03,900 INFO L93 Difference]: Finished difference Result 283 states and 345 transitions. [2025-02-06 10:44:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-02-06 10:44:03,900 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 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 75 [2025-02-06 10:44:03,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:44:03,901 INFO L225 Difference]: With dead ends: 283 [2025-02-06 10:44:03,901 INFO L226 Difference]: Without dead ends: 272 [2025-02-06 10:44:03,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 132 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=813, Invalid=3347, Unknown=0, NotChecked=0, Total=4160 [2025-02-06 10:44:03,904 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 151 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:44:03,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 166 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:44:03,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2025-02-06 10:44:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 227. [2025-02-06 10:44:03,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 225 states have (on average 1.2222222222222223) internal successors, (275), 226 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:03,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 275 transitions. [2025-02-06 10:44:03,909 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 275 transitions. Word has length 75 [2025-02-06 10:44:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:44:03,909 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 275 transitions. [2025-02-06 10:44:03,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:03,909 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 275 transitions. [2025-02-06 10:44:03,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-06 10:44:03,909 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:44:03,909 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:44:03,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 10:44:04,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:44:04,110 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:44:04,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:44:04,111 INFO L85 PathProgramCache]: Analyzing trace with hash -207447248, now seen corresponding path program 1 times [2025-02-06 10:44:04,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:44:04,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966210152] [2025-02-06 10:44:04,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:44:04,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:44:04,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-06 10:44:04,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 10:44:04,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:44:04,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:44:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-02-06 10:44:04,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:44:04,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966210152] [2025-02-06 10:44:04,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966210152] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:44:04,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151380363] [2025-02-06 10:44:04,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:44:04,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:44:04,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:44:04,215 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:44:04,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 10:44:04,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 75 statements into 1 equivalence classes. [2025-02-06 10:44:04,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 75 of 75 statements. [2025-02-06 10:44:04,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:44:04,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:44:04,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 10:44:04,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:44:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-02-06 10:44:04,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:44:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-02-06 10:44:04,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151380363] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:44:04,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:44:04,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-02-06 10:44:04,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685817587] [2025-02-06 10:44:04,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:44:04,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 10:44:04,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:44:04,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 10:44:04,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:44:04,412 INFO L87 Difference]: Start difference. First operand 227 states and 275 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:04,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:44:04,446 INFO L93 Difference]: Finished difference Result 195 states and 235 transitions. [2025-02-06 10:44:04,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:44:04,446 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 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 75 [2025-02-06 10:44:04,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:44:04,447 INFO L225 Difference]: With dead ends: 195 [2025-02-06 10:44:04,448 INFO L226 Difference]: Without dead ends: 193 [2025-02-06 10:44:04,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 139 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:44:04,448 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:44:04,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 170 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:44:04,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2025-02-06 10:44:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2025-02-06 10:44:04,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 191 states have (on average 1.219895287958115) internal successors, (233), 192 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:04,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 233 transitions. [2025-02-06 10:44:04,451 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 233 transitions. Word has length 75 [2025-02-06 10:44:04,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:44:04,452 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 233 transitions. [2025-02-06 10:44:04,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 233 transitions. [2025-02-06 10:44:04,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-06 10:44:04,453 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:44:04,453 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:44:04,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 10:44:04,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-02-06 10:44:04,657 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:44:04,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:44:04,657 INFO L85 PathProgramCache]: Analyzing trace with hash -984740215, now seen corresponding path program 2 times [2025-02-06 10:44:04,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:44:04,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515467244] [2025-02-06 10:44:04,658 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:44:04,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:44:04,665 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 78 statements into 2 equivalence classes. [2025-02-06 10:44:04,678 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 78 of 78 statements. [2025-02-06 10:44:04,679 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:44:04,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:44:04,809 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2025-02-06 10:44:04,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:44:04,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515467244] [2025-02-06 10:44:04,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515467244] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:44:04,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289824769] [2025-02-06 10:44:04,809 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:44:04,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:44:04,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:44:04,811 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:44:04,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 10:44:04,891 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 78 statements into 2 equivalence classes. [2025-02-06 10:44:04,918 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 78 of 78 statements. [2025-02-06 10:44:04,919 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:44:04,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:44:04,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 10:44:04,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:44:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2025-02-06 10:44:05,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:44:05,470 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 [2025-02-06 10:44:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2025-02-06 10:44:05,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289824769] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:44:05,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:44:05,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 24 [2025-02-06 10:44:05,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557373025] [2025-02-06 10:44:05,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:44:05,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 10:44:05,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:44:05,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 10:44:05,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2025-02-06 10:44:05,558 INFO L87 Difference]: Start difference. First operand 193 states and 233 transitions. Second operand has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:06,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:44:06,076 INFO L93 Difference]: Finished difference Result 172 states and 191 transitions. [2025-02-06 10:44:06,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-06 10:44:06,077 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2025-02-06 10:44:06,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:44:06,077 INFO L225 Difference]: With dead ends: 172 [2025-02-06 10:44:06,077 INFO L226 Difference]: Without dead ends: 124 [2025-02-06 10:44:06,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=559, Invalid=1991, Unknown=0, NotChecked=0, Total=2550 [2025-02-06 10:44:06,080 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:44:06,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 76 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:44:06,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-02-06 10:44:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 103. [2025-02-06 10:44:06,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.107843137254902) internal successors, (113), 102 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:06,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2025-02-06 10:44:06,085 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 78 [2025-02-06 10:44:06,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:44:06,085 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2025-02-06 10:44:06,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.083333333333333) internal successors, (122), 24 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:06,085 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2025-02-06 10:44:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-02-06 10:44:06,086 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:44:06,086 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:44:06,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 10:44:06,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:44:06,289 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:44:06,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:44:06,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1314990259, now seen corresponding path program 1 times [2025-02-06 10:44:06,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:44:06,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948197092] [2025-02-06 10:44:06,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:44:06,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:44:06,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-02-06 10:44:06,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-02-06 10:44:06,311 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:44:06,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:44:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 30 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2025-02-06 10:44:06,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:44:06,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948197092] [2025-02-06 10:44:06,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948197092] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:44:06,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444924301] [2025-02-06 10:44:06,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:44:06,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:44:06,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:44:06,461 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:44:06,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 10:44:06,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-02-06 10:44:06,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-02-06 10:44:06,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:44:06,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:44:06,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 10:44:06,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:44:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2025-02-06 10:44:06,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:44:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2025-02-06 10:44:06,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444924301] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:44:06,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:44:06,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-02-06 10:44:06,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684140143] [2025-02-06 10:44:06,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:44:06,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 10:44:06,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:44:06,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 10:44:06,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2025-02-06 10:44:06,710 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:44:06,748 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2025-02-06 10:44:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:44:06,749 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-02-06 10:44:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:44:06,749 INFO L225 Difference]: With dead ends: 107 [2025-02-06 10:44:06,749 INFO L226 Difference]: Without dead ends: 106 [2025-02-06 10:44:06,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 166 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2025-02-06 10:44:06,754 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:44:06,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 141 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:44:06,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-02-06 10:44:06,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2025-02-06 10:44:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.1047619047619048) internal successors, (116), 105 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:06,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2025-02-06 10:44:06,756 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 90 [2025-02-06 10:44:06,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:44:06,756 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2025-02-06 10:44:06,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.176470588235294) internal successors, (71), 17 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:06,756 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2025-02-06 10:44:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-06 10:44:06,756 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:44:06,756 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:44:06,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-06 10:44:06,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-06 10:44:06,957 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2025-02-06 10:44:06,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:44:06,958 INFO L85 PathProgramCache]: Analyzing trace with hash 843851928, now seen corresponding path program 2 times [2025-02-06 10:44:06,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:44:06,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924984747] [2025-02-06 10:44:06,958 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:44:06,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:44:06,967 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes. [2025-02-06 10:44:06,988 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 10:44:06,989 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:44:06,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:44:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2025-02-06 10:44:07,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:44:07,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924984747] [2025-02-06 10:44:07,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924984747] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:44:07,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471442189] [2025-02-06 10:44:07,113 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:44:07,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:44:07,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:44:07,117 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:44:07,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 10:44:07,194 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes. [2025-02-06 10:44:07,227 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 10:44:07,227 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:44:07,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:44:07,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 10:44:07,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:44:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 40 proven. 43 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2025-02-06 10:44:07,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:44:07,591 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 40 proven. 43 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2025-02-06 10:44:07,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471442189] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:44:07,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:44:07,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 24 [2025-02-06 10:44:07,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66953580] [2025-02-06 10:44:07,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:44:07,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 10:44:07,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:44:07,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 10:44:07,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2025-02-06 10:44:07,593 INFO L87 Difference]: Start difference. First operand 106 states and 116 transitions. Second operand has 24 states, 24 states have (on average 5.0) internal successors, (120), 24 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:08,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:44:08,114 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2025-02-06 10:44:08,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 10:44:08,114 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.0) internal successors, (120), 24 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2025-02-06 10:44:08,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:44:08,115 INFO L225 Difference]: With dead ends: 114 [2025-02-06 10:44:08,115 INFO L226 Difference]: Without dead ends: 0 [2025-02-06 10:44:08,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 166 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=396, Invalid=1496, Unknown=0, NotChecked=0, Total=1892 [2025-02-06 10:44:08,116 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:44:08,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 113 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:44:08,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-06 10:44:08,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-06 10:44:08,116 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) [2025-02-06 10:44:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-06 10:44:08,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 93 [2025-02-06 10:44:08,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:44:08,117 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 10:44:08,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.0) internal successors, (120), 24 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:44:08,117 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-06 10:44:08,117 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-06 10:44:08,119 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (17 of 18 remaining) [2025-02-06 10:44:08,119 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2025-02-06 10:44:08,119 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2025-02-06 10:44:08,119 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2025-02-06 10:44:08,119 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2025-02-06 10:44:08,120 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2025-02-06 10:44:08,120 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2025-02-06 10:44:08,120 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2025-02-06 10:44:08,120 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2025-02-06 10:44:08,120 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 18 remaining) [2025-02-06 10:44:08,120 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2025-02-06 10:44:08,120 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2025-02-06 10:44:08,120 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2025-02-06 10:44:08,120 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2025-02-06 10:44:08,120 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2025-02-06 10:44:08,120 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2025-02-06 10:44:08,120 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2025-02-06 10:44:08,120 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2025-02-06 10:44:08,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-06 10:44:08,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:44:08,324 INFO L422 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:44:08,329 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 10:44:08,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 10:44:08 BoogieIcfgContainer [2025-02-06 10:44:08,336 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 10:44:08,337 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 10:44:08,337 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 10:44:08,337 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 10:44:08,341 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:43:46" (3/4) ... [2025-02-06 10:44:08,343 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 10:44:08,352 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2025-02-06 10:44:08,353 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-02-06 10:44:08,353 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-06 10:44:08,353 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 10:44:08,421 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 10:44:08,422 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 10:44:08,422 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 10:44:08,422 INFO L158 Benchmark]: Toolchain (without parser) took 22834.19ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 134.6MB in the beginning and 233.1MB in the end (delta: -98.5MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2025-02-06 10:44:08,423 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 115.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:44:08,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.70ms. Allocated memory is still 167.8MB. Free memory was 134.2MB in the beginning and 123.0MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 10:44:08,423 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.82ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 121.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:44:08,423 INFO L158 Benchmark]: Boogie Preprocessor took 23.89ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 120.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:44:08,424 INFO L158 Benchmark]: IcfgBuilder took 270.81ms. Allocated memory is still 167.8MB. Free memory was 120.1MB in the beginning and 103.7MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 10:44:08,425 INFO L158 Benchmark]: TraceAbstraction took 22270.39ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 102.9MB in the beginning and 240.8MB in the end (delta: -138.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 10:44:08,425 INFO L158 Benchmark]: Witness Printer took 85.03ms. Allocated memory is still 293.6MB. Free memory was 240.8MB in the beginning and 233.1MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 10:44:08,426 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 115.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.70ms. Allocated memory is still 167.8MB. Free memory was 134.2MB in the beginning and 123.0MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.82ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 121.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.89ms. Allocated memory is still 167.8MB. Free memory was 121.7MB in the beginning and 120.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 270.81ms. Allocated memory is still 167.8MB. Free memory was 120.1MB in the beginning and 103.7MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 22270.39ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 102.9MB in the beginning and 240.8MB in the end (delta: -138.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 85.03ms. Allocated memory is still 293.6MB. Free memory was 240.8MB in the beginning and 233.1MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. 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: 28]: 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 - 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: -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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 22.2s, OverallIterations: 30, TraceHistogramMax: 6, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2509 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2509 mSDsluCounter, 3397 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2615 mSDsCounter, 414 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6982 IncrementalHoareTripleChecker+Invalid, 7396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 414 mSolverCounterUnsat, 782 mSDtfsCounter, 6982 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2555 GetRequests, 1951 SyntacticMatches, 33 SemanticMatches, 571 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5105 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=227occurred in iteration=26, InterpolantAutomatonStates: 384, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 30 MinimizatonAttempts, 806 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 2494 NumberOfCodeBlocks, 2325 NumberOfCodeBlocksAsserted, 79 NumberOfCheckSat, 3500 ConstructedInterpolants, 0 QuantifiedInterpolants, 21819 SizeOfPredicates, 53 NumberOfNonLiveVariables, 4987 ConjunctsInSsa, 291 ConjunctsInUnsatCore, 70 InterpolantComputations, 11 PerfectInterpolantSequences, 4914/5750 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 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 10:44:08,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE