./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-examples/standard_strcpy_original-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/array-examples/standard_strcpy_original-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 25419aae3fa6b25817a0bb63109cdb8dd339b767b8ddb876acb37423139730d4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:04:46,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:04:46,736 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 10:04:46,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:04:46,742 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:04:46,767 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:04:46,768 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:04:46,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:04:46,768 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:04:46,768 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:04:46,769 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:04:46,769 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:04:46,770 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:04:46,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:04:46,770 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:04:46,770 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:04:46,770 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:04:46,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:04:46,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:04:46,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:04:46,770 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:04:46,771 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:04:46,771 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:04:46,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:04:46,771 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:04:46,771 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:04:46,771 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:04:46,771 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:04:46,771 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:04:46,771 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:04:46,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:04:46,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:04:46,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:04:46,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:04:46,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:04:46,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:04:46,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:04:46,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:04:46,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:04:46,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:04:46,773 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:04:46,773 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:04:46,773 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 -> 25419aae3fa6b25817a0bb63109cdb8dd339b767b8ddb876acb37423139730d4 [2025-02-06 10:04:47,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:04:47,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:04:47,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:04:47,019 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:04:47,019 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:04:47,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_strcpy_original-1.i [2025-02-06 10:04:48,179 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/31ece8101/44b9fce88b7c458bad8714982c9e93fb/FLAG56039ff26 [2025-02-06 10:04:48,397 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:04:48,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_original-1.i [2025-02-06 10:04:48,406 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/31ece8101/44b9fce88b7c458bad8714982c9e93fb/FLAG56039ff26 [2025-02-06 10:04:48,728 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/31ece8101/44b9fce88b7c458bad8714982c9e93fb [2025-02-06 10:04:48,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:04:48,731 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:04:48,731 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:04:48,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:04:48,734 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:04:48,735 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:04:48" (1/1) ... [2025-02-06 10:04:48,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403774b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48, skipping insertion in model container [2025-02-06 10:04:48,736 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:04:48" (1/1) ... [2025-02-06 10:04:48,745 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:04:48,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:04:48,858 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:04:48,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:04:48,880 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:04:48,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48 WrapperNode [2025-02-06 10:04:48,881 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:04:48,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:04:48,882 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:04:48,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:04:48,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48" (1/1) ... [2025-02-06 10:04:48,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48" (1/1) ... [2025-02-06 10:04:48,901 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2025-02-06 10:04:48,901 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:04:48,902 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:04:48,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:04:48,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:04:48,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48" (1/1) ... [2025-02-06 10:04:48,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48" (1/1) ... [2025-02-06 10:04:48,909 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48" (1/1) ... [2025-02-06 10:04:48,920 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 2, 5]. 56 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 10:04:48,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48" (1/1) ... [2025-02-06 10:04:48,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48" (1/1) ... [2025-02-06 10:04:48,926 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48" (1/1) ... [2025-02-06 10:04:48,927 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48" (1/1) ... [2025-02-06 10:04:48,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48" (1/1) ... [2025-02-06 10:04:48,931 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48" (1/1) ... [2025-02-06 10:04:48,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:04:48,933 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:04:48,933 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:04:48,933 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:04:48,934 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48" (1/1) ... [2025-02-06 10:04:48,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:04:48,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:04:48,960 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 10:04:48,965 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 10:04:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 10:04:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 10:04:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 10:04:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 10:04:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 10:04:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 10:04:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 10:04:48,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 10:04:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:04:48,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:04:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 10:04:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 10:04:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 10:04:48,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:04:49,032 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:04:49,033 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:04:49,190 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: call ULTIMATE.dealloc(main_~#src~0#1.base, main_~#src~0#1.offset);havoc main_~#src~0#1.base, main_~#src~0#1.offset;call ULTIMATE.dealloc(main_~#dst~0#1.base, main_~#dst~0#1.offset);havoc main_~#dst~0#1.base, main_~#dst~0#1.offset; [2025-02-06 10:04:49,196 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2025-02-06 10:04:49,196 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:04:49,202 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:04:49,202 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:04:49,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:04:49 BoogieIcfgContainer [2025-02-06 10:04:49,202 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:04:49,204 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:04:49,204 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:04:49,207 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:04:49,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:04:48" (1/3) ... [2025-02-06 10:04:49,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761a3bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:04:49, skipping insertion in model container [2025-02-06 10:04:49,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:04:48" (2/3) ... [2025-02-06 10:04:49,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761a3bb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:04:49, skipping insertion in model container [2025-02-06 10:04:49,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:04:49" (3/3) ... [2025-02-06 10:04:49,209 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_strcpy_original-1.i [2025-02-06 10:04:49,219 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:04:49,220 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_strcpy_original-1.i that has 1 procedures, 44 locations, 1 initial locations, 3 loop locations, and 16 error locations. [2025-02-06 10:04:49,246 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:04:49,253 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;@57ce98ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:04:49,253 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-02-06 10:04:49,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:04:49,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 10:04:49,263 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:04:49,263 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 10:04:49,264 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-02-06 10:04:49,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:04:49,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2461694, now seen corresponding path program 1 times [2025-02-06 10:04:49,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:04:49,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210425955] [2025-02-06 10:04:49,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:04:49,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:04:49,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 10:04:49,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 10:04:49,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:04:49,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:49,467 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 10:04:49,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:04:49,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210425955] [2025-02-06 10:04:49,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210425955] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:04:49,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:04:49,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:04:49,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730485974] [2025-02-06 10:04:49,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:04:49,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:04:49,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:04:49,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:04:49,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:04:49,496 INFO L87 Difference]: Start difference. First operand has 44 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 10:04:49,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:04:49,546 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2025-02-06 10:04:49,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:04:49,548 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 10:04:49,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:04:49,551 INFO L225 Difference]: With dead ends: 38 [2025-02-06 10:04:49,552 INFO L226 Difference]: Without dead ends: 36 [2025-02-06 10:04:49,553 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 10:04:49,555 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:04:49,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 26 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:04:49,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-06 10:04:49,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-02-06 10:04:49,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.52) internal successors, (38), 35 states have internal predecessors, (38), 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 10:04:49,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2025-02-06 10:04:49,578 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 4 [2025-02-06 10:04:49,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:04:49,579 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2025-02-06 10:04:49,579 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 10:04:49,579 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2025-02-06 10:04:49,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-06 10:04:49,579 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:04:49,579 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-06 10:04:49,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 10:04:49,580 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-02-06 10:04:49,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:04:49,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2461695, now seen corresponding path program 1 times [2025-02-06 10:04:49,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:04:49,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616029678] [2025-02-06 10:04:49,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:04:49,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:04:49,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 10:04:49,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 10:04:49,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:04:49,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:49,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:04:49,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:04:49,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616029678] [2025-02-06 10:04:49,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616029678] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:04:49,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:04:49,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:04:49,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015072386] [2025-02-06 10:04:49,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:04:49,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:04:49,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:04:49,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:04:49,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:04:49,712 INFO L87 Difference]: Start difference. First operand 36 states and 38 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 10:04:49,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:04:49,758 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2025-02-06 10:04:49,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:04:49,759 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 10:04:49,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:04:49,759 INFO L225 Difference]: With dead ends: 39 [2025-02-06 10:04:49,759 INFO L226 Difference]: Without dead ends: 39 [2025-02-06 10:04:49,759 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 10:04:49,760 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:04:49,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 50 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:04:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-02-06 10:04:49,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2025-02-06 10:04:49,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:04:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2025-02-06 10:04:49,764 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 4 [2025-02-06 10:04:49,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:04:49,764 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2025-02-06 10:04:49,764 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 10:04:49,764 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2025-02-06 10:04:49,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 10:04:49,764 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:04:49,764 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2025-02-06 10:04:49,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 10:04:49,765 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-02-06 10:04:49,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:04:49,765 INFO L85 PathProgramCache]: Analyzing trace with hash 321895950, now seen corresponding path program 1 times [2025-02-06 10:04:49,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:04:49,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231295863] [2025-02-06 10:04:49,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:04:49,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:04:49,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 10:04:49,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 10:04:49,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:04:49,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:49,940 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 10:04:49,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:04:49,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231295863] [2025-02-06 10:04:49,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231295863] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:04:49,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038059816] [2025-02-06 10:04:49,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:04:49,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:04:49,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:04:49,947 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 10:04:49,949 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 10:04:49,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 10:04:49,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 10:04:49,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:04:49,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:49,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 10:04:50,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:04:50,055 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 10:04:50,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:04:50,062 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 10:04:50,128 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 10:04:50,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:04:50,201 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 10:04:50,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038059816] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:04:50,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:04:50,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-02-06 10:04:50,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8165132] [2025-02-06 10:04:50,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:04:50,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:04:50,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:04:50,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:04:50,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:04:50,203 INFO L87 Difference]: Start difference. First operand 38 states and 40 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 10:04:50,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:04:50,286 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2025-02-06 10:04:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:04:50,287 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 10:04:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:04:50,288 INFO L225 Difference]: With dead ends: 45 [2025-02-06 10:04:50,288 INFO L226 Difference]: Without dead ends: 45 [2025-02-06 10:04:50,289 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 10:04:50,289 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:04:50,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 68 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:04:50,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-02-06 10:04:50,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2025-02-06 10:04:50,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 44 states have internal predecessors, (49), 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 10:04:50,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2025-02-06 10:04:50,293 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 7 [2025-02-06 10:04:50,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:04:50,295 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2025-02-06 10:04:50,295 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 10:04:50,295 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2025-02-06 10:04:50,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 10:04:50,296 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:04:50,296 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 10:04:50,303 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 10:04:50,496 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 10:04:50,497 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-02-06 10:04:50,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:04:50,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1507753706, now seen corresponding path program 1 times [2025-02-06 10:04:50,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:04:50,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90428679] [2025-02-06 10:04:50,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:04:50,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:04:50,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 10:04:50,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 10:04:50,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:04:50,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:04:50,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:04:50,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90428679] [2025-02-06 10:04:50,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90428679] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:04:50,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017740471] [2025-02-06 10:04:50,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:04:50,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:04:50,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:04:50,605 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 10:04:50,607 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 10:04:50,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 10:04:50,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 10:04:50,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:04:50,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:50,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:04:50,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:04:50,668 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 10:04:50,669 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:04:50,712 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 10:04:50,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017740471] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:04:50,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:04:50,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2025-02-06 10:04:50,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661550170] [2025-02-06 10:04:50,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:04:50,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:04:50,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:04:50,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:04:50,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:04:50,714 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 10:04:50,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:04:50,930 INFO L93 Difference]: Finished difference Result 194 states and 225 transitions. [2025-02-06 10:04:50,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 10:04:50,930 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 11 [2025-02-06 10:04:50,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:04:50,931 INFO L225 Difference]: With dead ends: 194 [2025-02-06 10:04:50,931 INFO L226 Difference]: Without dead ends: 194 [2025-02-06 10:04:50,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:04:50,932 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 394 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:04:50,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 114 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:04:50,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2025-02-06 10:04:50,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 54. [2025-02-06 10:04:50,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 53 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:04:50,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2025-02-06 10:04:50,936 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 11 [2025-02-06 10:04:50,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:04:50,938 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2025-02-06 10:04:50,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 10:04:50,938 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2025-02-06 10:04:50,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-06 10:04:50,938 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:04:50,939 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2025-02-06 10:04:50,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 10:04:51,143 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 10:04:51,143 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-02-06 10:04:51,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:04:51,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1755710657, now seen corresponding path program 2 times [2025-02-06 10:04:51,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:04:51,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787463206] [2025-02-06 10:04:51,144 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:04:51,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:04:51,151 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 10:04:51,160 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 10:04:51,164 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:04:51,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:51,331 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:04:51,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:04:51,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787463206] [2025-02-06 10:04:51,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787463206] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:04:51,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759182187] [2025-02-06 10:04:51,331 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:04:51,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:04:51,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:04:51,335 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 10:04:51,336 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 10:04:51,369 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 10:04:51,380 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 10:04:51,381 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:04:51,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:51,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 10:04:51,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:04:51,401 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 10:04:51,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:04:51,405 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 10:04:51,538 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:04:51,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:04:51,679 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:04:51,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759182187] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:04:51,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:04:51,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2025-02-06 10:04:51,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146232274] [2025-02-06 10:04:51,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:04:51,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 10:04:51,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:04:51,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 10:04:51,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2025-02-06 10:04:51,680 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 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 10:04:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:04:52,179 INFO L93 Difference]: Finished difference Result 263 states and 301 transitions. [2025-02-06 10:04:52,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 10:04:52,180 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 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 10:04:52,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:04:52,181 INFO L225 Difference]: With dead ends: 263 [2025-02-06 10:04:52,181 INFO L226 Difference]: Without dead ends: 263 [2025-02-06 10:04:52,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2025-02-06 10:04:52,182 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 1078 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:04:52,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 539 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 10:04:52,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2025-02-06 10:04:52,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 191. [2025-02-06 10:04:52,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 183 states have (on average 1.3989071038251366) internal successors, (256), 190 states have internal predecessors, (256), 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 10:04:52,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 256 transitions. [2025-02-06 10:04:52,195 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 256 transitions. Word has length 16 [2025-02-06 10:04:52,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:04:52,195 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 256 transitions. [2025-02-06 10:04:52,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 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 10:04:52,195 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 256 transitions. [2025-02-06 10:04:52,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-06 10:04:52,196 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:04:52,196 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:04:52,202 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 10:04:52,400 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 10:04:52,400 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-02-06 10:04:52,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:04:52,400 INFO L85 PathProgramCache]: Analyzing trace with hash -523068965, now seen corresponding path program 1 times [2025-02-06 10:04:52,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:04:52,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074308656] [2025-02-06 10:04:52,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:04:52,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:04:52,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 10:04:52,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 10:04:52,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:04:52,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:04:52,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:04:52,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074308656] [2025-02-06 10:04:52,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074308656] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:04:52,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756627349] [2025-02-06 10:04:52,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:04:52,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:04:52,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:04:52,579 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 10:04:52,581 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 10:04:52,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 10:04:52,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 10:04:52,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:04:52,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:52,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 10:04:52,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:04:52,686 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:04:52,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:04:52,883 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:04:52,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756627349] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:04:52,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:04:52,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-06 10:04:52,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020265237] [2025-02-06 10:04:52,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:04:52,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 10:04:52,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:04:52,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 10:04:52,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:04:52,885 INFO L87 Difference]: Start difference. First operand 191 states and 256 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 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 10:04:53,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:04:53,266 INFO L93 Difference]: Finished difference Result 625 states and 717 transitions. [2025-02-06 10:04:53,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-06 10:04:53,266 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 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 38 [2025-02-06 10:04:53,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:04:53,268 INFO L225 Difference]: With dead ends: 625 [2025-02-06 10:04:53,268 INFO L226 Difference]: Without dead ends: 625 [2025-02-06 10:04:53,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:04:53,269 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 1302 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:04:53,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 375 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:04:53,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2025-02-06 10:04:53,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 227. [2025-02-06 10:04:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 219 states have (on average 1.3333333333333333) internal successors, (292), 226 states have internal predecessors, (292), 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 10:04:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 292 transitions. [2025-02-06 10:04:53,288 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 292 transitions. Word has length 38 [2025-02-06 10:04:53,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:04:53,288 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 292 transitions. [2025-02-06 10:04:53,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 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 10:04:53,288 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 292 transitions. [2025-02-06 10:04:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-06 10:04:53,289 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:04:53,289 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:04:53,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 10:04:53,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-06 10:04:53,490 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-02-06 10:04:53,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:04:53,490 INFO L85 PathProgramCache]: Analyzing trace with hash 441633691, now seen corresponding path program 2 times [2025-02-06 10:04:53,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:04:53,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781641871] [2025-02-06 10:04:53,491 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:04:53,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:04:53,507 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 74 statements into 2 equivalence classes. [2025-02-06 10:04:53,510 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 74 statements. [2025-02-06 10:04:53,511 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:04:53,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2025-02-06 10:04:53,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:04:53,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781641871] [2025-02-06 10:04:53,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781641871] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:04:53,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:04:53,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:04:53,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715930060] [2025-02-06 10:04:53,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:04:53,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:04:53,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:04:53,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:04:53,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:04:53,553 INFO L87 Difference]: Start difference. First operand 227 states and 292 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:04:53,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:04:53,587 INFO L93 Difference]: Finished difference Result 233 states and 295 transitions. [2025-02-06 10:04:53,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:04:53,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2025-02-06 10:04:53,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:04:53,588 INFO L225 Difference]: With dead ends: 233 [2025-02-06 10:04:53,588 INFO L226 Difference]: Without dead ends: 233 [2025-02-06 10:04:53,589 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 10:04:53,589 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 56 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:04:53,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 30 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:04:53,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2025-02-06 10:04:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 227. [2025-02-06 10:04:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 219 states have (on average 1.3242009132420092) internal successors, (290), 226 states have internal predecessors, (290), 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 10:04:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 290 transitions. [2025-02-06 10:04:53,595 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 290 transitions. Word has length 74 [2025-02-06 10:04:53,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:04:53,595 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 290 transitions. [2025-02-06 10:04:53,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:04:53,596 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 290 transitions. [2025-02-06 10:04:53,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-06 10:04:53,597 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:04:53,597 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:04:53,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 10:04:53,597 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-02-06 10:04:53,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:04:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash 441633690, now seen corresponding path program 1 times [2025-02-06 10:04:53,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:04:53,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736158924] [2025-02-06 10:04:53,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:04:53,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:04:53,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-06 10:04:53,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-06 10:04:53,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:04:53,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2025-02-06 10:04:53,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:04:53,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736158924] [2025-02-06 10:04:53,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736158924] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:04:53,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:04:53,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:04:53,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334991921] [2025-02-06 10:04:53,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:04:53,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:04:53,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:04:53,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:04:53,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:04:53,725 INFO L87 Difference]: Start difference. First operand 227 states and 290 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:04:53,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:04:53,741 INFO L93 Difference]: Finished difference Result 225 states and 270 transitions. [2025-02-06 10:04:53,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:04:53,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2025-02-06 10:04:53,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:04:53,742 INFO L225 Difference]: With dead ends: 225 [2025-02-06 10:04:53,742 INFO L226 Difference]: Without dead ends: 225 [2025-02-06 10:04:53,742 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 10:04:53,746 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:04:53,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 23 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:04:53,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2025-02-06 10:04:53,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2025-02-06 10:04:53,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 219 states have (on average 1.2328767123287672) internal successors, (270), 224 states have internal predecessors, (270), 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 10:04:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 270 transitions. [2025-02-06 10:04:53,751 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 270 transitions. Word has length 74 [2025-02-06 10:04:53,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:04:53,751 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 270 transitions. [2025-02-06 10:04:53,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:04:53,751 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 270 transitions. [2025-02-06 10:04:53,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-02-06 10:04:53,752 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:04:53,752 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:04:53,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 10:04:53,752 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-02-06 10:04:53,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:04:53,752 INFO L85 PathProgramCache]: Analyzing trace with hash 43106519, now seen corresponding path program 1 times [2025-02-06 10:04:53,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:04:53,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448317402] [2025-02-06 10:04:53,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:04:53,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:04:53,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-06 10:04:53,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-06 10:04:53,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:04:53,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:54,232 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:04:54,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:04:54,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448317402] [2025-02-06 10:04:54,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448317402] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:04:54,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888760319] [2025-02-06 10:04:54,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:04:54,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:04:54,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:04:54,234 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 10:04:54,236 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 10:04:54,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-02-06 10:04:54,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-02-06 10:04:54,313 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:04:54,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:54,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:04:54,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:04:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:04:54,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:04:55,044 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:04:55,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888760319] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:04:55,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:04:55,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-02-06 10:04:55,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410578296] [2025-02-06 10:04:55,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:04:55,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-06 10:04:55,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:04:55,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-06 10:04:55,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-06 10:04:55,047 INFO L87 Difference]: Start difference. First operand 225 states and 270 transitions. Second operand has 49 states, 49 states have (on average 3.061224489795918) internal successors, (150), 49 states have internal predecessors, (150), 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 10:04:56,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:04:56,142 INFO L93 Difference]: Finished difference Result 1179 states and 1389 transitions. [2025-02-06 10:04:56,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-06 10:04:56,142 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.061224489795918) internal successors, (150), 49 states have internal predecessors, (150), 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 10:04:56,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:04:56,145 INFO L225 Difference]: With dead ends: 1179 [2025-02-06 10:04:56,145 INFO L226 Difference]: Without dead ends: 1179 [2025-02-06 10:04:56,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-06 10:04:56,146 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 2764 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2764 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 10:04:56,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2764 Valid, 681 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 10:04:56,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2025-02-06 10:04:56,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 297. [2025-02-06 10:04:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 291 states have (on average 1.175257731958763) internal successors, (342), 296 states have internal predecessors, (342), 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 10:04:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 342 transitions. [2025-02-06 10:04:56,157 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 342 transitions. Word has length 78 [2025-02-06 10:04:56,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:04:56,158 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 342 transitions. [2025-02-06 10:04:56,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.061224489795918) internal successors, (150), 49 states have internal predecessors, (150), 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 10:04:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 342 transitions. [2025-02-06 10:04:56,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-02-06 10:04:56,161 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:04:56,161 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:04:56,167 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 10:04:56,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:04:56,365 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-02-06 10:04:56,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:04:56,365 INFO L85 PathProgramCache]: Analyzing trace with hash -150813609, now seen corresponding path program 2 times [2025-02-06 10:04:56,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:04:56,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815934117] [2025-02-06 10:04:56,366 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:04:56,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:04:56,383 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 150 statements into 2 equivalence classes. [2025-02-06 10:04:56,386 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 150 statements. [2025-02-06 10:04:56,386 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:04:56,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2025-02-06 10:04:56,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:04:56,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815934117] [2025-02-06 10:04:56,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815934117] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:04:56,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:04:56,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:04:56,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320826108] [2025-02-06 10:04:56,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:04:56,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:04:56,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:04:56,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:04:56,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:04:56,465 INFO L87 Difference]: Start difference. First operand 297 states and 342 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:04:56,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:04:56,484 INFO L93 Difference]: Finished difference Result 296 states and 341 transitions. [2025-02-06 10:04:56,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:04:56,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2025-02-06 10:04:56,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:04:56,486 INFO L225 Difference]: With dead ends: 296 [2025-02-06 10:04:56,486 INFO L226 Difference]: Without dead ends: 294 [2025-02-06 10:04:56,486 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 10:04:56,486 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:04:56,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 38 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:04:56,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2025-02-06 10:04:56,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2025-02-06 10:04:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 289 states have (on average 1.1418685121107266) internal successors, (330), 293 states have internal predecessors, (330), 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 10:04:56,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 330 transitions. [2025-02-06 10:04:56,491 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 330 transitions. Word has length 150 [2025-02-06 10:04:56,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:04:56,491 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 330 transitions. [2025-02-06 10:04:56,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:04:56,491 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 330 transitions. [2025-02-06 10:04:56,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-02-06 10:04:56,492 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:04:56,492 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 10:04:56,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 10:04:56,493 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-02-06 10:04:56,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:04:56,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1820969118, now seen corresponding path program 1 times [2025-02-06 10:04:56,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:04:56,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328096948] [2025-02-06 10:04:56,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:04:56,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:04:56,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-06 10:04:56,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-06 10:04:56,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:04:56,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3156 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 10:04:58,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:04:58,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328096948] [2025-02-06 10:04:58,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328096948] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:04:58,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129687159] [2025-02-06 10:04:58,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:04:58,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:04:58,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:04:58,103 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 10:04:58,105 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 10:04:58,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-02-06 10:04:58,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-02-06 10:04:58,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:04:58,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:04:58,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-06 10:04:58,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:04:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3156 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 10:04:58,392 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:05:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3156 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 10:05:00,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129687159] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:05:00,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:05:00,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2025-02-06 10:05:00,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406844215] [2025-02-06 10:05:00,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:05:00,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2025-02-06 10:05:00,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:05:00,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2025-02-06 10:05:00,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-02-06 10:05:00,401 INFO L87 Difference]: Start difference. First operand 294 states and 330 transitions. Second operand has 97 states, 97 states have (on average 3.0103092783505154) internal successors, (292), 97 states have internal predecessors, (292), 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 10:05:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:05:06,279 INFO L93 Difference]: Finished difference Result 2094 states and 2544 transitions. [2025-02-06 10:05:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-06 10:05:06,280 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 3.0103092783505154) internal successors, (292), 97 states have internal predecessors, (292), 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 152 [2025-02-06 10:05:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:05:06,286 INFO L225 Difference]: With dead ends: 2094 [2025-02-06 10:05:06,286 INFO L226 Difference]: Without dead ends: 2094 [2025-02-06 10:05:06,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-02-06 10:05:06,288 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 5478 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 1398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5478 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 2480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1398 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:05:06,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5478 Valid, 1066 Invalid, 2480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1398 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-06 10:05:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2025-02-06 10:05:06,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 438. [2025-02-06 10:05:06,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 433 states have (on average 1.094688221709007) internal successors, (474), 437 states have internal predecessors, (474), 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 10:05:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 474 transitions. [2025-02-06 10:05:06,302 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 474 transitions. Word has length 152 [2025-02-06 10:05:06,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:05:06,302 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 474 transitions. [2025-02-06 10:05:06,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 3.0103092783505154) internal successors, (292), 97 states have internal predecessors, (292), 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 10:05:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 474 transitions. [2025-02-06 10:05:06,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2025-02-06 10:05:06,304 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:05:06,305 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 10:05:06,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 10:05:06,505 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,SelfDestructingSolverStorable10 [2025-02-06 10:05:06,505 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-02-06 10:05:06,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:05:06,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1056178590, now seen corresponding path program 2 times [2025-02-06 10:05:06,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:05:06,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704431678] [2025-02-06 10:05:06,506 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:05:06,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:05:06,537 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 296 statements into 2 equivalence classes. [2025-02-06 10:05:06,539 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 296 statements. [2025-02-06 10:05:06,539 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:05:06,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:05:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 13212 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13209 trivial. 0 not checked. [2025-02-06 10:05:06,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:05:06,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704431678] [2025-02-06 10:05:06,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704431678] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:05:06,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039765888] [2025-02-06 10:05:06,611 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:05:06,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:05:06,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:05:06,613 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 10:05:06,615 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 10:05:06,713 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 296 statements into 2 equivalence classes. [2025-02-06 10:05:06,720 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 296 statements. [2025-02-06 10:05:06,720 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:05:06,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:05:06,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 10:05:06,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:05:06,744 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 10 treesize of output 8 [2025-02-06 10:05:06,753 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 10:05:08,738 INFO L134 CoverageAnalysis]: Checked inductivity of 13212 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13209 trivial. 0 not checked. [2025-02-06 10:05:08,738 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:05:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 13212 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13209 trivial. 0 not checked. [2025-02-06 10:05:11,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039765888] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:05:11,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:05:11,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2025-02-06 10:05:11,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140991562] [2025-02-06 10:05:11,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:05:11,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:05:11,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:05:11,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:05:11,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:05:11,879 INFO L87 Difference]: Start difference. First operand 438 states and 474 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 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 10:05:15,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-06 10:05:15,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:05:15,269 INFO L93 Difference]: Finished difference Result 436 states and 456 transitions. [2025-02-06 10:05:15,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:05:15,270 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 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 296 [2025-02-06 10:05:15,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:05:15,271 INFO L225 Difference]: With dead ends: 436 [2025-02-06 10:05:15,271 INFO L226 Difference]: Without dead ends: 436 [2025-02-06 10:05:15,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:05:15,271 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 80 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:05:15,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 20 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2025-02-06 10:05:15,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2025-02-06 10:05:15,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2025-02-06 10:05:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 433 states have (on average 1.0531177829099307) internal successors, (456), 435 states have internal predecessors, (456), 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 10:05:15,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 456 transitions. [2025-02-06 10:05:15,277 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 456 transitions. Word has length 296 [2025-02-06 10:05:15,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:05:15,277 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 456 transitions. [2025-02-06 10:05:15,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 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 10:05:15,277 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 456 transitions. [2025-02-06 10:05:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2025-02-06 10:05:15,279 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:05:15,279 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:05:15,285 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 10:05:15,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:05:15,480 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2025-02-06 10:05:15,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:05:15,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2102197131, now seen corresponding path program 1 times [2025-02-06 10:05:15,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:05:15,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261571117] [2025-02-06 10:05:15,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:05:15,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:05:15,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 299 statements into 1 equivalence classes. [2025-02-06 10:05:15,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 299 of 299 statements. [2025-02-06 10:05:15,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:05:15,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:05:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 13207 backedges. 0 proven. 13207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:05:20,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:05:20,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261571117] [2025-02-06 10:05:20,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261571117] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:05:20,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842436252] [2025-02-06 10:05:20,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:05:20,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:05:20,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:05:20,128 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 10:05:20,129 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 10:05:20,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 299 statements into 1 equivalence classes. [2025-02-06 10:05:20,330 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 299 of 299 statements. [2025-02-06 10:05:20,331 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:05:20,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:05:20,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-02-06 10:05:20,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:05:20,601 INFO L134 CoverageAnalysis]: Checked inductivity of 13207 backedges. 0 proven. 13207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:05:20,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:05:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 13207 backedges. 0 proven. 13207 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:05:28,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842436252] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:05:28,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:05:28,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-02-06 10:05:28,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290180413] [2025-02-06 10:05:28,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:05:28,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-02-06 10:05:28,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:05:28,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-02-06 10:05:28,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-02-06 10:05:28,108 INFO L87 Difference]: Start difference. First operand 436 states and 456 transitions. Second operand has 193 states, 193 states have (on average 3.0414507772020727) internal successors, (587), 193 states have internal predecessors, (587), 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)