./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0235-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0235-3.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 02c65307022e35fe6a7161faa785e5b34e94ccda4b82967e279eadaf3aa37bc3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 06:23:29,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 06:23:29,712 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 06:23:29,716 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 06:23:29,717 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 06:23:29,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 06:23:29,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 06:23:29,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 06:23:29,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 06:23:29,752 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 06:23:29,753 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 06:23:29,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 06:23:29,754 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 06:23:29,754 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 06:23:29,754 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 06:23:29,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 06:23:29,754 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 06:23:29,754 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 06:23:29,754 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 06:23:29,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 06:23:29,754 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 06:23:29,755 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 06:23:29,755 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 06:23:29,755 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 06:23:29,755 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 06:23:29,755 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 06:23:29,755 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 06:23:29,755 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 06:23:29,755 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 06:23:29,756 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 06:23:29,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 06:23:29,756 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 06:23:29,756 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 06:23:29,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:23:29,756 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 06:23:29,757 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 06:23:29,757 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 06:23:29,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 06:23:29,757 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 06:23:29,757 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 06:23:29,757 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 06:23:29,757 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 06:23:29,757 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 -> 02c65307022e35fe6a7161faa785e5b34e94ccda4b82967e279eadaf3aa37bc3 [2025-02-08 06:23:29,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 06:23:29,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 06:23:30,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 06:23:30,001 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 06:23:30,001 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 06:23:30,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0235-3.i [2025-02-08 06:23:31,183 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8db017072/8ff0575dbf4545538ad529bb14e729bc/FLAG4d1d826e2 [2025-02-08 06:23:31,463 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 06:23:31,463 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-3.i [2025-02-08 06:23:31,478 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8db017072/8ff0575dbf4545538ad529bb14e729bc/FLAG4d1d826e2 [2025-02-08 06:23:31,491 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8db017072/8ff0575dbf4545538ad529bb14e729bc [2025-02-08 06:23:31,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 06:23:31,494 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 06:23:31,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 06:23:31,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 06:23:31,499 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 06:23:31,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:23:31" (1/1) ... [2025-02-08 06:23:31,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c71becc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31, skipping insertion in model container [2025-02-08 06:23:31,500 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:23:31" (1/1) ... [2025-02-08 06:23:31,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 06:23:31,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:23:31,760 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 06:23:31,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:23:31,808 INFO L204 MainTranslator]: Completed translation [2025-02-08 06:23:31,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31 WrapperNode [2025-02-08 06:23:31,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 06:23:31,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 06:23:31,809 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 06:23:31,809 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 06:23:31,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31" (1/1) ... [2025-02-08 06:23:31,823 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31" (1/1) ... [2025-02-08 06:23:31,838 INFO L138 Inliner]: procedures = 188, calls = 73, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 236 [2025-02-08 06:23:31,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 06:23:31,839 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 06:23:31,839 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 06:23:31,839 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 06:23:31,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31" (1/1) ... [2025-02-08 06:23:31,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31" (1/1) ... [2025-02-08 06:23:31,848 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31" (1/1) ... [2025-02-08 06:23:31,869 INFO L175 MemorySlicer]: Split 39 memory accesses to 3 slices as follows [2, 11, 26]. 67 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 13 writes are split as follows [0, 1, 12]. [2025-02-08 06:23:31,869 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31" (1/1) ... [2025-02-08 06:23:31,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31" (1/1) ... [2025-02-08 06:23:31,880 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31" (1/1) ... [2025-02-08 06:23:31,880 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31" (1/1) ... [2025-02-08 06:23:31,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31" (1/1) ... [2025-02-08 06:23:31,882 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31" (1/1) ... [2025-02-08 06:23:31,884 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 06:23:31,885 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 06:23:31,885 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 06:23:31,885 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 06:23:31,886 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31" (1/1) ... [2025-02-08 06:23:31,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:23:31,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:31,919 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) [2025-02-08 06:23:31,923 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 [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2025-02-08 06:23:31,939 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2025-02-08 06:23:31,939 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 06:23:31,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 06:23:31,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 06:23:32,038 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 06:23:32,039 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 06:23:32,288 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L642: havoc calloc_model_#t~memset~res4#1.base, calloc_model_#t~memset~res4#1.offset; [2025-02-08 06:23:32,484 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L788: havoc main_#t~mem39#1.base, main_#t~mem39#1.offset; [2025-02-08 06:23:32,520 INFO L? ?]: Removed 201 outVars from TransFormulas that were not future-live. [2025-02-08 06:23:32,523 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 06:23:32,540 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 06:23:32,540 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 06:23:32,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:23:32 BoogieIcfgContainer [2025-02-08 06:23:32,541 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 06:23:32,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 06:23:32,543 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 06:23:32,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 06:23:32,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 06:23:31" (1/3) ... [2025-02-08 06:23:32,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60397335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:23:32, skipping insertion in model container [2025-02-08 06:23:32,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:23:31" (2/3) ... [2025-02-08 06:23:32,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60397335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:23:32, skipping insertion in model container [2025-02-08 06:23:32,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:23:32" (3/3) ... [2025-02-08 06:23:32,554 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0235-3.i [2025-02-08 06:23:32,564 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 06:23:32,565 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0235-3.i that has 3 procedures, 241 locations, 1 initial locations, 11 loop locations, and 89 error locations. [2025-02-08 06:23:32,628 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 06:23:32,637 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;@4056c972, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 06:23:32,637 INFO L334 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2025-02-08 06:23:32,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 241 states, 136 states have (on average 1.8897058823529411) internal successors, (257), 225 states have internal predecessors, (257), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 06:23:32,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 06:23:32,645 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:32,646 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 06:23:32,646 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2025-02-08 06:23:32,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash 301750, now seen corresponding path program 1 times [2025-02-08 06:23:32,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:32,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567096034] [2025-02-08 06:23:32,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:32,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:32,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 06:23:32,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 06:23:32,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:32,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:32,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:23:32,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:32,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567096034] [2025-02-08 06:23:32,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567096034] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:23:32,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:23:32,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:23:32,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205756395] [2025-02-08 06:23:32,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:23:32,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 06:23:32,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:32,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 06:23:32,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 06:23:32,776 INFO L87 Difference]: Start difference. First operand has 241 states, 136 states have (on average 1.8897058823529411) internal successors, (257), 225 states have internal predecessors, (257), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:23:32,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:32,813 INFO L93 Difference]: Finished difference Result 241 states and 272 transitions. [2025-02-08 06:23:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 06:23:32,814 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2025-02-08 06:23:32,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:32,819 INFO L225 Difference]: With dead ends: 241 [2025-02-08 06:23:32,821 INFO L226 Difference]: Without dead ends: 239 [2025-02-08 06:23:32,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 06:23:32,824 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:32,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:23:32,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2025-02-08 06:23:32,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2025-02-08 06:23:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 135 states have (on average 1.8074074074074074) internal successors, (244), 223 states have internal predecessors, (244), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 06:23:32,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 270 transitions. [2025-02-08 06:23:32,866 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 270 transitions. Word has length 3 [2025-02-08 06:23:32,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:32,866 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 270 transitions. [2025-02-08 06:23:32,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:23:32,866 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 270 transitions. [2025-02-08 06:23:32,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-08 06:23:32,866 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:32,867 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 06:23:32,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 06:23:32,867 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2025-02-08 06:23:32,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:32,868 INFO L85 PathProgramCache]: Analyzing trace with hash 290069804, now seen corresponding path program 1 times [2025-02-08 06:23:32,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:32,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809680123] [2025-02-08 06:23:32,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:32,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:32,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 06:23:32,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 06:23:32,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:32,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:23:32,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:32,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809680123] [2025-02-08 06:23:32,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809680123] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:23:32,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:23:32,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:23:32,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896185217] [2025-02-08 06:23:32,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:23:32,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:23:32,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:32,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:23:32,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:23:32,985 INFO L87 Difference]: Start difference. First operand 239 states and 270 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:23:33,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:33,109 INFO L93 Difference]: Finished difference Result 238 states and 269 transitions. [2025-02-08 06:23:33,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:23:33,109 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-08 06:23:33,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:33,110 INFO L225 Difference]: With dead ends: 238 [2025-02-08 06:23:33,110 INFO L226 Difference]: Without dead ends: 238 [2025-02-08 06:23:33,110 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 [2025-02-08 06:23:33,111 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 3 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:33,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 445 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:23:33,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2025-02-08 06:23:33,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2025-02-08 06:23:33,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 135 states have (on average 1.8) internal successors, (243), 222 states have internal predecessors, (243), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 06:23:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 269 transitions. [2025-02-08 06:23:33,127 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 269 transitions. Word has length 5 [2025-02-08 06:23:33,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:33,128 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 269 transitions. [2025-02-08 06:23:33,128 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:23:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 269 transitions. [2025-02-08 06:23:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 06:23:33,128 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:33,128 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 06:23:33,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 06:23:33,128 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2025-02-08 06:23:33,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:33,129 INFO L85 PathProgramCache]: Analyzing trace with hash 402229437, now seen corresponding path program 1 times [2025-02-08 06:23:33,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:33,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727501370] [2025-02-08 06:23:33,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:33,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:33,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:23:33,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:23:33,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:33,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:23:33,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928317054] [2025-02-08 06:23:33,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:33,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:33,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:33,168 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) [2025-02-08 06:23:33,170 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 [2025-02-08 06:23:33,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:23:33,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:23:33,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:33,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:33,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 06:23:33,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:23:33,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 06:23:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:23:33,327 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:23:33,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:33,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727501370] [2025-02-08 06:23:33,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:23:33,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928317054] [2025-02-08 06:23:33,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928317054] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:23:33,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:23:33,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:23:33,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79872459] [2025-02-08 06:23:33,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:23:33,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:23:33,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:33,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:23:33,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:23:33,330 INFO L87 Difference]: Start difference. First operand 238 states and 269 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:23:33,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:33,465 INFO L93 Difference]: Finished difference Result 246 states and 277 transitions. [2025-02-08 06:23:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:23:33,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-08 06:23:33,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:33,466 INFO L225 Difference]: With dead ends: 246 [2025-02-08 06:23:33,467 INFO L226 Difference]: Without dead ends: 246 [2025-02-08 06:23:33,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:23:33,467 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 10 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:33,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 705 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:23:33,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2025-02-08 06:23:33,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2025-02-08 06:23:33,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 142 states have (on average 1.767605633802817) internal successors, (251), 229 states have internal predecessors, (251), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 06:23:33,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 277 transitions. [2025-02-08 06:23:33,476 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 277 transitions. Word has length 6 [2025-02-08 06:23:33,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:33,476 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 277 transitions. [2025-02-08 06:23:33,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:23:33,476 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 277 transitions. [2025-02-08 06:23:33,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-08 06:23:33,477 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:33,477 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:23:33,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 06:23:33,682 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 [2025-02-08 06:23:33,682 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2025-02-08 06:23:33,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:33,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1802905465, now seen corresponding path program 1 times [2025-02-08 06:23:33,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:33,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139185309] [2025-02-08 06:23:33,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:33,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:33,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 06:23:33,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 06:23:33,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:33,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:23:33,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438059722] [2025-02-08 06:23:33,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:33,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:33,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:33,769 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) [2025-02-08 06:23:33,770 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 [2025-02-08 06:23:33,870 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 06:23:33,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 06:23:33,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:33,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:33,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-08 06:23:33,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:23:33,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2025-02-08 06:23:33,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:23:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-08 06:23:34,039 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:23:34,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:34,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139185309] [2025-02-08 06:23:34,039 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:23:34,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438059722] [2025-02-08 06:23:34,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438059722] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:23:34,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:23:34,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:23:34,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755747995] [2025-02-08 06:23:34,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:23:34,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:23:34,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:34,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:23:34,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:23:34,041 INFO L87 Difference]: Start difference. First operand 246 states and 277 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 06:23:34,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:34,168 INFO L93 Difference]: Finished difference Result 256 states and 287 transitions. [2025-02-08 06:23:34,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:23:34,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2025-02-08 06:23:34,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:34,169 INFO L225 Difference]: With dead ends: 256 [2025-02-08 06:23:34,169 INFO L226 Difference]: Without dead ends: 248 [2025-02-08 06:23:34,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:23:34,170 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 3 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:34,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 966 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:23:34,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2025-02-08 06:23:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2025-02-08 06:23:34,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 144 states have (on average 1.7569444444444444) internal successors, (253), 231 states have internal predecessors, (253), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 06:23:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 279 transitions. [2025-02-08 06:23:34,182 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 279 transitions. Word has length 60 [2025-02-08 06:23:34,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:34,182 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 279 transitions. [2025-02-08 06:23:34,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-08 06:23:34,182 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 279 transitions. [2025-02-08 06:23:34,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-08 06:23:34,184 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:34,184 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:23:34,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 06:23:34,385 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 [2025-02-08 06:23:34,385 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2025-02-08 06:23:34,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:34,385 INFO L85 PathProgramCache]: Analyzing trace with hash -929572051, now seen corresponding path program 1 times [2025-02-08 06:23:34,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:34,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953132971] [2025-02-08 06:23:34,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:34,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:34,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-08 06:23:34,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 06:23:34,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:34,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:23:34,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878922082] [2025-02-08 06:23:34,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:34,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:34,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:34,558 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) [2025-02-08 06:23:34,559 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 [2025-02-08 06:23:34,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-08 06:23:34,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 06:23:34,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:34,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:34,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 06:23:34,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:23:34,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-08 06:23:34,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:23:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 54 proven. 9 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-08 06:23:34,865 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:23:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-08 06:23:35,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:35,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953132971] [2025-02-08 06:23:35,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:23:35,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878922082] [2025-02-08 06:23:35,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878922082] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:23:35,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:23:35,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2025-02-08 06:23:35,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719243642] [2025-02-08 06:23:35,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:23:35,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 06:23:35,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:35,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 06:23:35,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-02-08 06:23:35,055 INFO L87 Difference]: Start difference. First operand 248 states and 279 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-08 06:23:35,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:35,334 INFO L93 Difference]: Finished difference Result 264 states and 296 transitions. [2025-02-08 06:23:35,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 06:23:35,335 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 65 [2025-02-08 06:23:35,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:35,336 INFO L225 Difference]: With dead ends: 264 [2025-02-08 06:23:35,336 INFO L226 Difference]: Without dead ends: 252 [2025-02-08 06:23:35,336 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2025-02-08 06:23:35,337 INFO L435 NwaCegarLoop]: 263 mSDtfsCounter, 22 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:35,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1234 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:23:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2025-02-08 06:23:35,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2025-02-08 06:23:35,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 148 states have (on average 1.7364864864864864) internal successors, (257), 235 states have internal predecessors, (257), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 06:23:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 283 transitions. [2025-02-08 06:23:35,343 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 283 transitions. Word has length 65 [2025-02-08 06:23:35,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:35,343 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 283 transitions. [2025-02-08 06:23:35,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-08 06:23:35,343 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 283 transitions. [2025-02-08 06:23:35,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-02-08 06:23:35,344 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:35,344 INFO L218 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:23:35,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 06:23:35,544 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 [2025-02-08 06:23:35,544 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2025-02-08 06:23:35,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:35,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1495331847, now seen corresponding path program 2 times [2025-02-08 06:23:35,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:35,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471135762] [2025-02-08 06:23:35,545 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:23:35,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:35,578 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-08 06:23:35,688 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-02-08 06:23:35,688 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:23:35,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:23:35,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754700368] [2025-02-08 06:23:35,694 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:23:35,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:35,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:35,696 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) [2025-02-08 06:23:35,697 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 [2025-02-08 06:23:35,818 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-08 06:23:36,022 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-02-08 06:23:36,022 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:23:36,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:36,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-02-08 06:23:36,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:23:36,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2025-02-08 06:23:36,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:23:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 213 proven. 36 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2025-02-08 06:23:36,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:23:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 46 proven. 103 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2025-02-08 06:23:36,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:36,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471135762] [2025-02-08 06:23:36,471 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:23:36,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754700368] [2025-02-08 06:23:36,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754700368] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:23:36,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:23:36,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2025-02-08 06:23:36,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208642086] [2025-02-08 06:23:36,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:23:36,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 06:23:36,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:36,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 06:23:36,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-02-08 06:23:36,474 INFO L87 Difference]: Start difference. First operand 252 states and 283 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-08 06:23:37,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:37,086 INFO L93 Difference]: Finished difference Result 271 states and 306 transitions. [2025-02-08 06:23:37,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 06:23:37,087 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 80 [2025-02-08 06:23:37,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:37,088 INFO L225 Difference]: With dead ends: 271 [2025-02-08 06:23:37,088 INFO L226 Difference]: Without dead ends: 259 [2025-02-08 06:23:37,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2025-02-08 06:23:37,089 INFO L435 NwaCegarLoop]: 263 mSDtfsCounter, 27 mSDsluCounter, 3224 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3487 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:37,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3487 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:23:37,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2025-02-08 06:23:37,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2025-02-08 06:23:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 155 states have (on average 1.7032258064516128) internal successors, (264), 242 states have internal predecessors, (264), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 06:23:37,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 290 transitions. [2025-02-08 06:23:37,094 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 290 transitions. Word has length 80 [2025-02-08 06:23:37,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:37,095 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 290 transitions. [2025-02-08 06:23:37,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-02-08 06:23:37,095 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 290 transitions. [2025-02-08 06:23:37,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-02-08 06:23:37,095 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:37,095 INFO L218 NwaCegarLoop]: trace histogram [40, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:23:37,107 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 [2025-02-08 06:23:37,296 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 [2025-02-08 06:23:37,296 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2025-02-08 06:23:37,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:37,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1793634425, now seen corresponding path program 3 times [2025-02-08 06:23:37,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:37,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775066178] [2025-02-08 06:23:37,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:23:37,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:37,343 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 100 statements into 18 equivalence classes. [2025-02-08 06:23:37,814 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 100 of 100 statements. [2025-02-08 06:23:37,814 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-02-08 06:23:37,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:23:37,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [529339221] [2025-02-08 06:23:37,827 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:23:37,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:37,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:37,830 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) [2025-02-08 06:23:37,832 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 [2025-02-08 06:23:37,967 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 100 statements into 18 equivalence classes. [2025-02-08 06:23:37,988 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 100 statements. [2025-02-08 06:23:37,988 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 06:23:37,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:37,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 06:23:37,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:23:38,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 06:23:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1060 trivial. 0 not checked. [2025-02-08 06:23:38,036 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:23:38,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:38,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775066178] [2025-02-08 06:23:38,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:23:38,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529339221] [2025-02-08 06:23:38,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529339221] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:23:38,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:23:38,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:23:38,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144459718] [2025-02-08 06:23:38,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:23:38,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:23:38,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:38,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:23:38,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:23:38,040 INFO L87 Difference]: Start difference. First operand 259 states and 290 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 06:23:38,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:38,130 INFO L93 Difference]: Finished difference Result 258 states and 289 transitions. [2025-02-08 06:23:38,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:23:38,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 100 [2025-02-08 06:23:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:38,132 INFO L225 Difference]: With dead ends: 258 [2025-02-08 06:23:38,132 INFO L226 Difference]: Without dead ends: 258 [2025-02-08 06:23:38,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:23:38,133 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 10 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:38,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 726 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:23:38,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2025-02-08 06:23:38,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2025-02-08 06:23:38,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 155 states have (on average 1.696774193548387) internal successors, (263), 241 states have internal predecessors, (263), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 06:23:38,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 289 transitions. [2025-02-08 06:23:38,140 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 289 transitions. Word has length 100 [2025-02-08 06:23:38,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:38,141 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 289 transitions. [2025-02-08 06:23:38,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-08 06:23:38,142 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 289 transitions. [2025-02-08 06:23:38,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-02-08 06:23:38,142 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:38,143 INFO L218 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:23:38,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 06:23:38,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:38,347 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2025-02-08 06:23:38,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:38,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1681893954, now seen corresponding path program 1 times [2025-02-08 06:23:38,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:38,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297020888] [2025-02-08 06:23:38,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:38,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:38,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-08 06:23:38,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-08 06:23:38,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:38,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 593 proven. 60 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2025-02-08 06:23:39,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:39,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297020888] [2025-02-08 06:23:39,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297020888] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:23:39,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395335657] [2025-02-08 06:23:39,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:39,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:39,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:39,352 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) [2025-02-08 06:23:39,353 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 [2025-02-08 06:23:39,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-08 06:23:39,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-08 06:23:39,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:39,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:39,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-08 06:23:39,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:23:39,705 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2025-02-08 06:23:39,746 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-08 06:23:39,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-02-08 06:23:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 593 proven. 1 refuted. 0 times theorem prover too weak. 727 trivial. 59 not checked. [2025-02-08 06:23:39,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:23:39,948 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 06:23:39,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2025-02-08 06:23:39,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 593 proven. 60 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2025-02-08 06:23:39,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395335657] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:23:39,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:23:39,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 15 [2025-02-08 06:23:39,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976987068] [2025-02-08 06:23:39,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:23:39,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 06:23:39,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:39,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 06:23:39,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=173, Unknown=1, NotChecked=26, Total=240 [2025-02-08 06:23:39,966 INFO L87 Difference]: Start difference. First operand 258 states and 289 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 06:23:40,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:40,489 INFO L93 Difference]: Finished difference Result 362 states and 414 transitions. [2025-02-08 06:23:40,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:23:40,489 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 111 [2025-02-08 06:23:40,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:40,495 INFO L225 Difference]: With dead ends: 362 [2025-02-08 06:23:40,495 INFO L226 Difference]: Without dead ends: 362 [2025-02-08 06:23:40,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 214 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=278, Unknown=1, NotChecked=34, Total=380 [2025-02-08 06:23:40,496 INFO L435 NwaCegarLoop]: 217 mSDtfsCounter, 475 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 386 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:40,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1784 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 948 Invalid, 0 Unknown, 386 Unchecked, 0.4s Time] [2025-02-08 06:23:40,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2025-02-08 06:23:40,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 256. [2025-02-08 06:23:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 155 states have (on average 1.6838709677419355) internal successors, (261), 239 states have internal predecessors, (261), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 06:23:40,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 287 transitions. [2025-02-08 06:23:40,503 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 287 transitions. Word has length 111 [2025-02-08 06:23:40,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:40,503 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 287 transitions. [2025-02-08 06:23:40,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-08 06:23:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 287 transitions. [2025-02-08 06:23:40,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-02-08 06:23:40,504 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:40,507 INFO L218 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:23:40,516 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 [2025-02-08 06:23:40,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-08 06:23:40,708 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2025-02-08 06:23:40,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:40,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1681893955, now seen corresponding path program 1 times [2025-02-08 06:23:40,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:40,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288836193] [2025-02-08 06:23:40,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:40,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:40,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-08 06:23:40,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-08 06:23:40,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:40,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 593 proven. 96 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2025-02-08 06:23:42,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:42,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288836193] [2025-02-08 06:23:42,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288836193] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:23:42,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134968107] [2025-02-08 06:23:42,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:42,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:42,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:42,554 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) [2025-02-08 06:23:42,556 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 [2025-02-08 06:23:42,734 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-08 06:23:43,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-08 06:23:43,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:43,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:43,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 74 conjuncts are in the unsatisfiable core [2025-02-08 06:23:43,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:23:43,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-02-08 06:23:46,317 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:23:46,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:23:46,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-08 06:23:46,415 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 06:23:46,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 06:23:46,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 495 proven. 316 refuted. 0 times theorem prover too weak. 467 trivial. 102 not checked. [2025-02-08 06:23:46,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:23:46,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134968107] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:23:46,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:23:46,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27] total 45 [2025-02-08 06:23:46,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3528288] [2025-02-08 06:23:46,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:23:46,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-08 06:23:46,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:46,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-08 06:23:46,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2014, Unknown=1, NotChecked=90, Total=2256 [2025-02-08 06:23:46,756 INFO L87 Difference]: Start difference. First operand 256 states and 287 transitions. Second operand has 46 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 41 states have internal predecessors, (76), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:23:50,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:23:55,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:55,033 INFO L93 Difference]: Finished difference Result 367 states and 422 transitions. [2025-02-08 06:23:55,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 06:23:55,033 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 41 states have internal predecessors, (76), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 111 [2025-02-08 06:23:55,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:55,035 INFO L225 Difference]: With dead ends: 367 [2025-02-08 06:23:55,035 INFO L226 Difference]: Without dead ends: 367 [2025-02-08 06:23:55,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=288, Invalid=3375, Unknown=1, NotChecked=118, Total=3782 [2025-02-08 06:23:55,036 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 274 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 5555 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 5956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 5555 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 384 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:55,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 2018 Invalid, 5956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 5555 Invalid, 1 Unknown, 384 Unchecked, 7.2s Time] [2025-02-08 06:23:55,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2025-02-08 06:23:55,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 254. [2025-02-08 06:23:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 155 states have (on average 1.6709677419354838) internal successors, (259), 237 states have internal predecessors, (259), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 06:23:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 285 transitions. [2025-02-08 06:23:55,046 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 285 transitions. Word has length 111 [2025-02-08 06:23:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:55,047 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 285 transitions. [2025-02-08 06:23:55,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 41 states have internal predecessors, (76), 3 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2025-02-08 06:23:55,047 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 285 transitions. [2025-02-08 06:23:55,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-08 06:23:55,049 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:55,049 INFO L218 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:23:55,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 06:23:55,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:55,250 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2025-02-08 06:23:55,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:55,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1392393503, now seen corresponding path program 1 times [2025-02-08 06:23:55,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:55,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669801620] [2025-02-08 06:23:55,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:55,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:55,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-08 06:23:55,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-08 06:23:55,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:55,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 766 proven. 151 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2025-02-08 06:23:56,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:56,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669801620] [2025-02-08 06:23:56,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669801620] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:23:56,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998468296] [2025-02-08 06:23:56,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:56,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:56,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:56,072 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) [2025-02-08 06:23:56,075 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 [2025-02-08 06:23:56,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-08 06:23:56,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-08 06:23:56,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:56,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:56,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-08 06:23:56,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:23:56,486 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-08 06:23:56,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2025-02-08 06:23:56,593 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2025-02-08 06:23:56,614 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2025-02-08 06:23:56,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2025-02-08 06:23:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 710 proven. 89 refuted. 0 times theorem prover too weak. 463 trivial. 118 not checked. [2025-02-08 06:23:56,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:23:57,337 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 06:23:57,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11 [2025-02-08 06:23:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 710 proven. 207 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2025-02-08 06:23:57,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998468296] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:23:57,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:23:57,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 19] total 31 [2025-02-08 06:23:57,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357062886] [2025-02-08 06:23:57,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:23:57,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-08 06:23:57,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:57,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-08 06:23:57,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=806, Unknown=1, NotChecked=58, Total=992 [2025-02-08 06:23:57,350 INFO L87 Difference]: Start difference. First operand 254 states and 285 transitions. Second operand has 32 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 26 states have internal predecessors, (83), 3 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-08 06:23:58,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:58,239 INFO L93 Difference]: Finished difference Result 357 states and 409 transitions. [2025-02-08 06:23:58,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 06:23:58,243 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 26 states have internal predecessors, (83), 3 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) Word has length 113 [2025-02-08 06:23:58,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:58,244 INFO L225 Difference]: With dead ends: 357 [2025-02-08 06:23:58,244 INFO L226 Difference]: Without dead ends: 357 [2025-02-08 06:23:58,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 206 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=191, Invalid=1072, Unknown=1, NotChecked=68, Total=1332 [2025-02-08 06:23:58,245 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 492 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 1586 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 381 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:58,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 2693 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1586 Invalid, 0 Unknown, 381 Unchecked, 0.7s Time] [2025-02-08 06:23:58,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2025-02-08 06:23:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 251. [2025-02-08 06:23:58,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 155 states have (on average 1.6516129032258065) internal successors, (256), 234 states have internal predecessors, (256), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 06:23:58,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 282 transitions. [2025-02-08 06:23:58,251 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 282 transitions. Word has length 113 [2025-02-08 06:23:58,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:58,251 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 282 transitions. [2025-02-08 06:23:58,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 26 states have internal predecessors, (83), 3 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-08 06:23:58,251 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 282 transitions. [2025-02-08 06:23:58,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-08 06:23:58,252 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:58,252 INFO L218 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:23:58,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 06:23:58,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:58,456 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2025-02-08 06:23:58,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:58,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1392393504, now seen corresponding path program 1 times [2025-02-08 06:23:58,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:58,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783636565] [2025-02-08 06:23:58,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:58,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:58,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-08 06:23:58,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-08 06:23:58,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:58,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:00,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 710 proven. 243 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2025-02-08 06:24:00,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:00,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783636565] [2025-02-08 06:24:00,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783636565] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:00,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405646655] [2025-02-08 06:24:00,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:00,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:00,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:00,255 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:00,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-08 06:24:00,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-08 06:24:01,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-08 06:24:01,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:01,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:01,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 108 conjuncts are in the unsatisfiable core [2025-02-08 06:24:01,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:01,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-02-08 06:24:03,058 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#valid| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|))) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:24:03,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:24:03,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-08 06:24:03,149 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-02-08 06:24:03,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2025-02-08 06:24:03,168 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2025-02-08 06:24:03,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:24:03,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2025-02-08 06:24:03,216 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 06:24:03,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-08 06:24:03,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 402 proven. 400 refuted. 0 times theorem prover too weak. 161 trivial. 417 not checked. [2025-02-08 06:24:03,351 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:03,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405646655] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:03,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:24:03,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29] total 50 [2025-02-08 06:24:03,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720283772] [2025-02-08 06:24:03,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:03,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-02-08 06:24:03,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:03,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-02-08 06:24:03,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2407, Unknown=2, NotChecked=198, Total=2756 [2025-02-08 06:24:03,488 INFO L87 Difference]: Start difference. First operand 251 states and 282 transitions. Second operand has 51 states, 50 states have (on average 1.96) internal successors, (98), 48 states have internal predecessors, (98), 3 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-08 06:24:07,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:24:11,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:24:16,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:24:20,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:24:24,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:24:28,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:24:32,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:24:37,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:24:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:42,781 INFO L93 Difference]: Finished difference Result 361 states and 416 transitions. [2025-02-08 06:24:42,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-08 06:24:42,786 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.96) internal successors, (98), 48 states have internal predecessors, (98), 3 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 3 states have call successors, (9) Word has length 113 [2025-02-08 06:24:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:42,787 INFO L225 Difference]: With dead ends: 361 [2025-02-08 06:24:42,787 INFO L226 Difference]: Without dead ends: 361 [2025-02-08 06:24:42,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=320, Invalid=3976, Unknown=2, NotChecked=258, Total=4556 [2025-02-08 06:24:42,789 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 281 mSDsluCounter, 1854 mSDsCounter, 0 mSdLazyCounter, 6003 mSolverCounterSat, 19 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 6786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 6003 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 756 IncrementalHoareTripleChecker+Unchecked, 37.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:42,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 1969 Invalid, 6786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 6003 Invalid, 8 Unknown, 756 Unchecked, 37.0s Time] [2025-02-08 06:24:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2025-02-08 06:24:42,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 248. [2025-02-08 06:24:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 155 states have (on average 1.632258064516129) internal successors, (253), 231 states have internal predecessors, (253), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 06:24:42,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 279 transitions. [2025-02-08 06:24:42,797 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 279 transitions. Word has length 113 [2025-02-08 06:24:42,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:42,797 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 279 transitions. [2025-02-08 06:24:42,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 1.96) internal successors, (98), 48 states have internal predecessors, (98), 3 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-08 06:24:42,797 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 279 transitions. [2025-02-08 06:24:42,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-02-08 06:24:42,798 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:42,798 INFO L218 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:42,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-08 06:24:43,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:43,002 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2025-02-08 06:24:43,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1476625721, now seen corresponding path program 1 times [2025-02-08 06:24:43,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:43,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212098087] [2025-02-08 06:24:43,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:43,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:43,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-08 06:24:43,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-08 06:24:43,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:43,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 763 proven. 329 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2025-02-08 06:24:44,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:44,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212098087] [2025-02-08 06:24:44,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212098087] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:44,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267930100] [2025-02-08 06:24:44,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:44,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:44,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:44,207 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:44,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-08 06:24:44,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-08 06:24:44,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-08 06:24:44,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:44,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:44,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-02-08 06:24:44,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:44,801 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-02-08 06:24:44,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2025-02-08 06:24:44,925 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-02-08 06:24:44,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2025-02-08 06:24:45,023 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2025-02-08 06:24:45,048 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-08 06:24:45,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2025-02-08 06:24:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 651 proven. 177 refuted. 0 times theorem prover too weak. 375 trivial. 177 not checked. [2025-02-08 06:24:45,100 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:24:45,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267930100] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:45,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:24:45,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 29 [2025-02-08 06:24:45,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262894919] [2025-02-08 06:24:45,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:24:45,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-08 06:24:45,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:24:45,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-08 06:24:45,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=877, Unknown=1, NotChecked=60, Total=1056 [2025-02-08 06:24:45,418 INFO L87 Difference]: Start difference. First operand 248 states and 279 transitions. Second operand has 30 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 25 states have internal predecessors, (83), 4 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (9), 8 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-08 06:24:47,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:24:47,127 INFO L93 Difference]: Finished difference Result 351 states and 403 transitions. [2025-02-08 06:24:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 06:24:47,128 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 25 states have internal predecessors, (83), 4 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (9), 8 states have call predecessors, (9), 4 states have call successors, (9) Word has length 119 [2025-02-08 06:24:47,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:24:47,129 INFO L225 Difference]: With dead ends: 351 [2025-02-08 06:24:47,129 INFO L226 Difference]: Without dead ends: 351 [2025-02-08 06:24:47,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 134 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=204, Invalid=1439, Unknown=1, NotChecked=78, Total=1722 [2025-02-08 06:24:47,130 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 283 mSDsluCounter, 3129 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:24:47,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 3322 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2093 Invalid, 0 Unknown, 375 Unchecked, 1.4s Time] [2025-02-08 06:24:47,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2025-02-08 06:24:47,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 245. [2025-02-08 06:24:47,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 155 states have (on average 1.6129032258064515) internal successors, (250), 228 states have internal predecessors, (250), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2025-02-08 06:24:47,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 276 transitions. [2025-02-08 06:24:47,136 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 276 transitions. Word has length 119 [2025-02-08 06:24:47,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:24:47,137 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 276 transitions. [2025-02-08 06:24:47,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 25 states have internal predecessors, (83), 4 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (9), 8 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-08 06:24:47,137 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 276 transitions. [2025-02-08 06:24:47,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-02-08 06:24:47,138 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:24:47,138 INFO L218 NwaCegarLoop]: trace histogram [45, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:24:47,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 06:24:47,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-08 06:24:47,339 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2025-02-08 06:24:47,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:24:47,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1476625722, now seen corresponding path program 1 times [2025-02-08 06:24:47,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:24:47,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586093047] [2025-02-08 06:24:47,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:47,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:24:47,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-08 06:24:47,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-08 06:24:47,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:47,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 651 proven. 528 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2025-02-08 06:24:54,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:24:54,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586093047] [2025-02-08 06:24:54,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586093047] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:24:54,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639529578] [2025-02-08 06:24:54,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:24:54,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:24:54,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:24:54,026 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:24:54,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-08 06:24:54,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-08 06:24:55,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-08 06:24:55,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:24:55,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:24:55,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 114 conjuncts are in the unsatisfiable core [2025-02-08 06:24:55,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:24:55,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-08 06:24:55,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9