./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0235-2.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-0235-2.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 5243781ee83706d005235269371a592cabf9c2dbc613c235cbe81d6e89d326d7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 06:22:43,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 06:22:43,357 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 06:22:43,365 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 06:22:43,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 06:22:43,396 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 06:22:43,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 06:22:43,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 06:22:43,399 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 06:22:43,399 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 06:22:43,400 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 06:22:43,400 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 06:22:43,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 06:22:43,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 06:22:43,400 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 06:22:43,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 06:22:43,400 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 06:22:43,400 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 06:22:43,400 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 06:22:43,400 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 06:22:43,400 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 06:22:43,400 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 06:22:43,400 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 06:22:43,400 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 06:22:43,401 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:22:43,401 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 06:22:43,401 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 06:22:43,401 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 -> 5243781ee83706d005235269371a592cabf9c2dbc613c235cbe81d6e89d326d7 [2025-02-08 06:22:43,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 06:22:43,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 06:22:43,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 06:22:43,996 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 06:22:43,997 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 06:22:44,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0235-2.i [2025-02-08 06:22:45,303 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/64b9ac13b/cd80297978004df5b84d4f460f3367fc/FLAGefdc9d3db [2025-02-08 06:22:45,627 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 06:22:45,628 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-2.i [2025-02-08 06:22:45,637 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/64b9ac13b/cd80297978004df5b84d4f460f3367fc/FLAGefdc9d3db [2025-02-08 06:22:45,647 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/64b9ac13b/cd80297978004df5b84d4f460f3367fc [2025-02-08 06:22:45,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 06:22:45,650 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 06:22:45,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 06:22:45,652 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 06:22:45,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 06:22:45,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:22:45" (1/1) ... [2025-02-08 06:22:45,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675c9faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:45, skipping insertion in model container [2025-02-08 06:22:45,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:22:45" (1/1) ... [2025-02-08 06:22:45,676 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 06:22:45,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:22:45,979 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 06:22:46,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:22:46,057 INFO L204 MainTranslator]: Completed translation [2025-02-08 06:22:46,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:46 WrapperNode [2025-02-08 06:22:46,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 06:22:46,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 06:22:46,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 06:22:46,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 06:22:46,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:46" (1/1) ... [2025-02-08 06:22:46,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:46" (1/1) ... [2025-02-08 06:22:46,088 INFO L138 Inliner]: procedures = 188, calls = 71, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 233 [2025-02-08 06:22:46,088 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 06:22:46,089 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 06:22:46,089 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 06:22:46,089 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 06:22:46,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:46" (1/1) ... [2025-02-08 06:22:46,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:46" (1/1) ... [2025-02-08 06:22:46,098 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:46" (1/1) ... [2025-02-08 06:22:46,126 INFO L175 MemorySlicer]: Split 38 memory accesses to 3 slices as follows [2, 26, 10]. 68 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 13 writes are split as follows [0, 12, 1]. [2025-02-08 06:22:46,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:46" (1/1) ... [2025-02-08 06:22:46,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:46" (1/1) ... [2025-02-08 06:22:46,140 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:46" (1/1) ... [2025-02-08 06:22:46,144 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:46" (1/1) ... [2025-02-08 06:22:46,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:46" (1/1) ... [2025-02-08 06:22:46,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:46" (1/1) ... [2025-02-08 06:22:46,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 06:22:46,149 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 06:22:46,149 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 06:22:46,149 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 06:22:46,150 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:46" (1/1) ... [2025-02-08 06:22:46,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:22:46,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:46,171 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 06:22:46,174 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 06:22:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 06:22:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 06:22:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 06:22:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 06:22:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 06:22:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 06:22:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 06:22:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 06:22:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2025-02-08 06:22:46,189 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2025-02-08 06:22:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 06:22:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 06:22:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 06:22:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 06:22:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2025-02-08 06:22:46,190 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2025-02-08 06:22:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 06:22:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 06:22:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 06:22:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 06:22:46,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 06:22:46,290 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 06:22:46,291 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 06:22:46,542 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 06:22:46,667 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L787: havoc main_#t~mem38#1.base, main_#t~mem38#1.offset; [2025-02-08 06:22:46,690 INFO L? ?]: Removed 201 outVars from TransFormulas that were not future-live. [2025-02-08 06:22:46,690 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 06:22:46,702 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 06:22:46,702 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 06:22:46,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:22:46 BoogieIcfgContainer [2025-02-08 06:22:46,702 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 06:22:46,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 06:22:46,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 06:22:46,707 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 06:22:46,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 06:22:45" (1/3) ... [2025-02-08 06:22:46,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40be098c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:22:46, skipping insertion in model container [2025-02-08 06:22:46,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:22:46" (2/3) ... [2025-02-08 06:22:46,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40be098c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:22:46, skipping insertion in model container [2025-02-08 06:22:46,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:22:46" (3/3) ... [2025-02-08 06:22:46,709 INFO L128 eAbstractionObserver]: Analyzing ICFG test-0235-2.i [2025-02-08 06:22:46,718 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 06:22:46,719 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-0235-2.i that has 3 procedures, 236 locations, 1 initial locations, 11 loop locations, and 87 error locations. [2025-02-08 06:22:46,771 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 06:22:46,778 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;@73e6e773, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 06:22:46,778 INFO L334 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2025-02-08 06:22:46,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 236 states, 134 states have (on average 1.8880597014925373) internal successors, (253), 221 states have internal predecessors, (253), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 06:22:46,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 06:22:46,784 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:46,784 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 06:22:46,784 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 84 more)] === [2025-02-08 06:22:46,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:46,788 INFO L85 PathProgramCache]: Analyzing trace with hash 296785, now seen corresponding path program 1 times [2025-02-08 06:22:46,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:46,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616205713] [2025-02-08 06:22:46,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:46,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:46,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 06:22:46,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 06:22:46,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:46,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:46,875 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 06:22:46,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:46,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616205713] [2025-02-08 06:22:46,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616205713] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:22:46,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:22:46,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:22:46,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189139040] [2025-02-08 06:22:46,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:22:46,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 06:22:46,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:46,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 06:22:46,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 06:22:46,896 INFO L87 Difference]: Start difference. First operand has 236 states, 134 states have (on average 1.8880597014925373) internal successors, (253), 221 states have internal predecessors, (253), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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 06:22:46,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:46,916 INFO L93 Difference]: Finished difference Result 236 states and 266 transitions. [2025-02-08 06:22:46,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 06:22:46,917 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 06:22:46,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:46,921 INFO L225 Difference]: With dead ends: 236 [2025-02-08 06:22:46,922 INFO L226 Difference]: Without dead ends: 234 [2025-02-08 06:22:46,923 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 06:22:46,924 INFO L435 NwaCegarLoop]: 266 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, 266 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 06:22:46,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:22:46,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2025-02-08 06:22:46,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2025-02-08 06:22:46,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 133 states have (on average 1.8045112781954886) internal successors, (240), 219 states have internal predecessors, (240), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 06:22:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 264 transitions. [2025-02-08 06:22:46,957 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 264 transitions. Word has length 3 [2025-02-08 06:22:46,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:46,957 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 264 transitions. [2025-02-08 06:22:46,957 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 06:22:46,957 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 264 transitions. [2025-02-08 06:22:46,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-08 06:22:46,957 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:46,958 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 06:22:46,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 06:22:46,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 84 more)] === [2025-02-08 06:22:46,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:46,958 INFO L85 PathProgramCache]: Analyzing trace with hash 285296517, now seen corresponding path program 1 times [2025-02-08 06:22:46,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:46,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557047682] [2025-02-08 06:22:46,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:46,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:46,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 06:22:46,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 06:22:46,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:46,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:47,039 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 06:22:47,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:47,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557047682] [2025-02-08 06:22:47,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557047682] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:22:47,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:22:47,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:22:47,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799993377] [2025-02-08 06:22:47,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:22:47,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:22:47,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:47,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:22:47,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:22:47,041 INFO L87 Difference]: Start difference. First operand 234 states and 264 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 06:22:47,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:47,178 INFO L93 Difference]: Finished difference Result 233 states and 263 transitions. [2025-02-08 06:22:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:22:47,178 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 06:22:47,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:47,179 INFO L225 Difference]: With dead ends: 233 [2025-02-08 06:22:47,180 INFO L226 Difference]: Without dead ends: 233 [2025-02-08 06:22:47,180 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 06:22:47,180 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 3 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:47,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 435 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:22:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2025-02-08 06:22:47,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2025-02-08 06:22:47,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 133 states have (on average 1.7969924812030076) internal successors, (239), 218 states have internal predecessors, (239), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 06:22:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 263 transitions. [2025-02-08 06:22:47,198 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 263 transitions. Word has length 5 [2025-02-08 06:22:47,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:47,198 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 263 transitions. [2025-02-08 06:22:47,198 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 06:22:47,198 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 263 transitions. [2025-02-08 06:22:47,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 06:22:47,198 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:47,198 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 06:22:47,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 06:22:47,198 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 84 more)] === [2025-02-08 06:22:47,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:47,199 INFO L85 PathProgramCache]: Analyzing trace with hash 254257540, now seen corresponding path program 1 times [2025-02-08 06:22:47,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:47,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376618198] [2025-02-08 06:22:47,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:47,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:47,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:22:47,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:22:47,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:47,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:22:47,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470363006] [2025-02-08 06:22:47,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:47,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:47,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:47,240 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 06:22:47,241 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 06:22:47,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:22:47,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:22:47,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:47,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:47,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 06:22:47,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:47,376 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 06:22:47,396 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 06:22:47,396 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:22:47,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:47,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376618198] [2025-02-08 06:22:47,397 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:22:47,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470363006] [2025-02-08 06:22:47,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470363006] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:22:47,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:22:47,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:22:47,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94155369] [2025-02-08 06:22:47,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:22:47,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:22:47,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:47,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:22:47,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:22:47,400 INFO L87 Difference]: Start difference. First operand 233 states and 263 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 06:22:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:47,531 INFO L93 Difference]: Finished difference Result 241 states and 271 transitions. [2025-02-08 06:22:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:22:47,532 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 06:22:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:47,533 INFO L225 Difference]: With dead ends: 241 [2025-02-08 06:22:47,534 INFO L226 Difference]: Without dead ends: 241 [2025-02-08 06:22:47,534 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 06:22:47,536 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 10 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:47,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 689 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:22:47,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2025-02-08 06:22:47,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2025-02-08 06:22:47,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 140 states have (on average 1.7642857142857142) internal successors, (247), 225 states have internal predecessors, (247), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 06:22:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 271 transitions. [2025-02-08 06:22:47,545 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 271 transitions. Word has length 6 [2025-02-08 06:22:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:47,545 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 271 transitions. [2025-02-08 06:22:47,545 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 06:22:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 271 transitions. [2025-02-08 06:22:47,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-02-08 06:22:47,546 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:47,546 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 06:22:47,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 06:22:47,750 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 06:22:47,750 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 84 more)] === [2025-02-08 06:22:47,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:47,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1882729879, now seen corresponding path program 1 times [2025-02-08 06:22:47,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:47,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539885866] [2025-02-08 06:22:47,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:47,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:47,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 06:22:47,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 06:22:47,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:47,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:22:47,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484413371] [2025-02-08 06:22:47,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:47,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:47,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:47,827 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 06:22:47,829 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 06:22:47,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-02-08 06:22:47,965 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-02-08 06:22:47,965 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:47,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:47,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-08 06:22:47,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:47,992 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 06:22:48,021 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 06:22:48,077 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 06:22:48,077 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:22:48,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:48,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539885866] [2025-02-08 06:22:48,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:22:48,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484413371] [2025-02-08 06:22:48,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484413371] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:22:48,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:22:48,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:22:48,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663409590] [2025-02-08 06:22:48,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:22:48,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:22:48,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:48,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:22:48,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:22:48,079 INFO L87 Difference]: Start difference. First operand 241 states and 271 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 06:22:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:48,289 INFO L93 Difference]: Finished difference Result 251 states and 281 transitions. [2025-02-08 06:22:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:22:48,289 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 06:22:48,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:48,290 INFO L225 Difference]: With dead ends: 251 [2025-02-08 06:22:48,291 INFO L226 Difference]: Without dead ends: 243 [2025-02-08 06:22:48,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:22:48,291 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 3 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:48,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 944 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:22:48,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2025-02-08 06:22:48,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2025-02-08 06:22:48,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 142 states have (on average 1.7535211267605635) internal successors, (249), 227 states have internal predecessors, (249), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 06:22:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 273 transitions. [2025-02-08 06:22:48,306 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 273 transitions. Word has length 60 [2025-02-08 06:22:48,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:48,307 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 273 transitions. [2025-02-08 06:22:48,307 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 06:22:48,307 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 273 transitions. [2025-02-08 06:22:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-08 06:22:48,308 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:48,308 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 06:22:48,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 06:22:48,508 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 06:22:48,509 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 84 more)] === [2025-02-08 06:22:48,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:48,509 INFO L85 PathProgramCache]: Analyzing trace with hash -778028657, now seen corresponding path program 1 times [2025-02-08 06:22:48,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:48,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639280892] [2025-02-08 06:22:48,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:48,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:48,555 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-08 06:22:48,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 06:22:48,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:48,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:22:48,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1381334927] [2025-02-08 06:22:48,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:48,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:48,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:48,712 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 06:22:48,714 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 06:22:48,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-02-08 06:22:48,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 06:22:48,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:48,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:48,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-08 06:22:48,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:48,953 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 06:22:49,030 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 06:22:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 54 proven. 14 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-02-08 06:22:49,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:22:49,277 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 06:22:49,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:49,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639280892] [2025-02-08 06:22:49,277 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:22:49,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381334927] [2025-02-08 06:22:49,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381334927] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:22:49,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:22:49,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2025-02-08 06:22:49,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119355817] [2025-02-08 06:22:49,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:22:49,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 06:22:49,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:49,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 06:22:49,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-02-08 06:22:49,279 INFO L87 Difference]: Start difference. First operand 243 states and 273 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 06:22:49,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:49,545 INFO L93 Difference]: Finished difference Result 259 states and 290 transitions. [2025-02-08 06:22:49,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 06:22:49,545 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 06:22:49,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:49,546 INFO L225 Difference]: With dead ends: 259 [2025-02-08 06:22:49,546 INFO L226 Difference]: Without dead ends: 247 [2025-02-08 06:22:49,547 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 06:22:49,547 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 22 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:49,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1206 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:22:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2025-02-08 06:22:49,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2025-02-08 06:22:49,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 146 states have (on average 1.7328767123287672) internal successors, (253), 231 states have internal predecessors, (253), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 06:22:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 277 transitions. [2025-02-08 06:22:49,554 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 277 transitions. Word has length 65 [2025-02-08 06:22:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:49,554 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 277 transitions. [2025-02-08 06:22:49,554 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 06:22:49,554 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 277 transitions. [2025-02-08 06:22:49,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-02-08 06:22:49,555 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:49,555 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 06:22:49,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 06:22:49,760 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 06:22:49,760 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 84 more)] === [2025-02-08 06:22:49,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:49,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1593196439, now seen corresponding path program 2 times [2025-02-08 06:22:49,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:49,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934600776] [2025-02-08 06:22:49,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:22:49,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:49,819 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-08 06:22:50,064 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-02-08 06:22:50,065 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:22:50,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:22:50,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083657767] [2025-02-08 06:22:50,075 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:22:50,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:50,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:50,078 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 06:22:50,081 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 06:22:50,195 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-08 06:22:50,399 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 80 of 80 statements. [2025-02-08 06:22:50,399 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:22:50,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:50,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-02-08 06:22:50,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:50,460 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 06:22:50,492 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 06:22:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 151 proven. 118 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2025-02-08 06:22:50,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:22:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 139 proven. 10 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2025-02-08 06:22:50,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:50,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934600776] [2025-02-08 06:22:50,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:22:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083657767] [2025-02-08 06:22:50,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083657767] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:22:50,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:22:50,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2025-02-08 06:22:50,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474805691] [2025-02-08 06:22:50,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:22:50,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 06:22:50,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:50,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 06:22:50,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2025-02-08 06:22:50,927 INFO L87 Difference]: Start difference. First operand 247 states and 277 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 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 06:22:51,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:51,509 INFO L93 Difference]: Finished difference Result 266 states and 300 transitions. [2025-02-08 06:22:51,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 06:22:51,509 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 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 80 [2025-02-08 06:22:51,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:51,510 INFO L225 Difference]: With dead ends: 266 [2025-02-08 06:22:51,510 INFO L226 Difference]: Without dead ends: 254 [2025-02-08 06:22:51,511 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 06:22:51,511 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 25 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:51,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2983 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:22:51,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2025-02-08 06:22:51,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2025-02-08 06:22:51,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 153 states have (on average 1.6993464052287581) internal successors, (260), 238 states have internal predecessors, (260), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 06:22:51,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 284 transitions. [2025-02-08 06:22:51,522 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 284 transitions. Word has length 80 [2025-02-08 06:22:51,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:51,523 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 284 transitions. [2025-02-08 06:22:51,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 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 06:22:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 284 transitions. [2025-02-08 06:22:51,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-02-08 06:22:51,526 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:51,526 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 06:22:51,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 06:22:51,727 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 06:22:51,727 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 84 more)] === [2025-02-08 06:22:51,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:51,730 INFO L85 PathProgramCache]: Analyzing trace with hash -562605673, now seen corresponding path program 3 times [2025-02-08 06:22:51,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:51,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671884521] [2025-02-08 06:22:51,732 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:22:51,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:51,787 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 100 statements into 18 equivalence classes. [2025-02-08 06:22:52,335 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 100 of 100 statements. [2025-02-08 06:22:52,335 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-02-08 06:22:52,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-08 06:22:52,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525518680] [2025-02-08 06:22:52,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:22:52,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:52,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:52,355 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 06:22:52,361 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 06:22:52,500 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 100 statements into 18 equivalence classes. [2025-02-08 06:22:52,518 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 100 statements. [2025-02-08 06:22:52,519 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 06:22:52,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:52,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 06:22:52,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:52,543 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 06:22:52,560 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 06:22:52,560 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:22:52,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:52,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671884521] [2025-02-08 06:22:52,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-08 06:22:52,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525518680] [2025-02-08 06:22:52,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525518680] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:22:52,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:22:52,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:22:52,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636557496] [2025-02-08 06:22:52,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:22:52,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:22:52,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:52,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:22:52,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:22:52,563 INFO L87 Difference]: Start difference. First operand 254 states and 284 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 06:22:52,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:52,679 INFO L93 Difference]: Finished difference Result 253 states and 283 transitions. [2025-02-08 06:22:52,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:22:52,680 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 06:22:52,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:52,682 INFO L225 Difference]: With dead ends: 253 [2025-02-08 06:22:52,682 INFO L226 Difference]: Without dead ends: 253 [2025-02-08 06:22:52,682 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 06:22:52,682 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 10 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:52,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 710 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:22:52,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2025-02-08 06:22:52,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2025-02-08 06:22:52,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 153 states have (on average 1.6928104575163399) internal successors, (259), 237 states have internal predecessors, (259), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 06:22:52,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 283 transitions. [2025-02-08 06:22:52,690 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 283 transitions. Word has length 100 [2025-02-08 06:22:52,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:52,692 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 283 transitions. [2025-02-08 06:22:52,692 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 06:22:52,692 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 283 transitions. [2025-02-08 06:22:52,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-02-08 06:22:52,693 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:52,693 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 06:22:52,719 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 06:22:52,896 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 06:22:52,897 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 84 more)] === [2025-02-08 06:22:52,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:52,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1564786004, now seen corresponding path program 1 times [2025-02-08 06:22:52,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:52,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896572152] [2025-02-08 06:22:52,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:52,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:52,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-08 06:22:52,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-08 06:22:52,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:53,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:53,855 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 06:22:53,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:53,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896572152] [2025-02-08 06:22:53,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896572152] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:22:53,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259896565] [2025-02-08 06:22:53,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:53,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:53,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:53,857 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 06:22:53,859 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 06:22:54,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-08 06:22:54,135 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-08 06:22:54,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:54,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:54,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-08 06:22:54,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:54,204 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 06:22:54,242 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-08 06:22:54,243 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 06:22:54,253 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 06:22:54,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:22:54,435 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 06:22:54,436 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 06:22:54,459 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 06:22:54,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259896565] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:22:54,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:22:54,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 15 [2025-02-08 06:22:54,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003657617] [2025-02-08 06:22:54,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:22:54,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 06:22:54,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:22:54,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 06:22:54,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=173, Unknown=1, NotChecked=26, Total=240 [2025-02-08 06:22:54,461 INFO L87 Difference]: Start difference. First operand 253 states and 283 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 06:22:55,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:22:55,077 INFO L93 Difference]: Finished difference Result 357 states and 407 transitions. [2025-02-08 06:22:55,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:22:55,078 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 06:22:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:22:55,080 INFO L225 Difference]: With dead ends: 357 [2025-02-08 06:22:55,080 INFO L226 Difference]: Without dead ends: 357 [2025-02-08 06:22:55,081 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 06:22:55,081 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 245 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 379 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:22:55,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1809 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 993 Invalid, 0 Unknown, 379 Unchecked, 0.5s Time] [2025-02-08 06:22:55,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2025-02-08 06:22:55,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 251. [2025-02-08 06:22:55,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 153 states have (on average 1.6797385620915033) internal successors, (257), 235 states have internal predecessors, (257), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 06:22:55,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 281 transitions. [2025-02-08 06:22:55,087 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 281 transitions. Word has length 111 [2025-02-08 06:22:55,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:22:55,088 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 281 transitions. [2025-02-08 06:22:55,088 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 06:22:55,088 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 281 transitions. [2025-02-08 06:22:55,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-02-08 06:22:55,089 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:22:55,089 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 06:22:55,098 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 06:22:55,293 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 06:22:55,293 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 84 more)] === [2025-02-08 06:22:55,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:22:55,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1564786005, now seen corresponding path program 1 times [2025-02-08 06:22:55,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:22:55,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220318572] [2025-02-08 06:22:55,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:55,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:22:55,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-08 06:22:55,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-08 06:22:55,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:55,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:57,328 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 06:22:57,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:22:57,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220318572] [2025-02-08 06:22:57,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220318572] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:22:57,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278125418] [2025-02-08 06:22:57,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:22:57,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:22:57,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:22:57,334 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 06:22:57,335 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 06:22:57,542 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-08 06:22:58,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-08 06:22:58,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:22:58,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:22:58,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 100 conjuncts are in the unsatisfiable core [2025-02-08 06:22:58,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:22:59,138 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 06:23:38,288 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 06:23:38,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:23:38,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-08 06:23:38,353 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-08 06:23:38,354 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 06:23:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 390 proven. 562 refuted. 0 times theorem prover too weak. 278 trivial. 150 not checked. [2025-02-08 06:23:38,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:23:38,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278125418] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:23:38,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:23:38,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28] total 39 [2025-02-08 06:23:38,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854386444] [2025-02-08 06:23:38,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:23:38,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-08 06:23:38,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:38,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-08 06:23:38,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1507, Unknown=9, NotChecked=78, Total=1722 [2025-02-08 06:23:38,499 INFO L87 Difference]: Start difference. First operand 251 states and 281 transitions. Second operand has 40 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 37 states have internal predecessors, (73), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-08 06:23:42,526 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 06:23:45,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:45,958 INFO L93 Difference]: Finished difference Result 364 states and 419 transitions. [2025-02-08 06:23:45,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-08 06:23:45,958 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 37 states have internal predecessors, (73), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 111 [2025-02-08 06:23:45,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:45,959 INFO L225 Difference]: With dead ends: 364 [2025-02-08 06:23:45,959 INFO L226 Difference]: Without dead ends: 364 [2025-02-08 06:23:45,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=274, Invalid=2801, Unknown=9, NotChecked=108, Total=3192 [2025-02-08 06:23:45,960 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 384 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 4760 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 5164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 4760 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 377 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:45,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1807 Invalid, 5164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 4760 Invalid, 1 Unknown, 377 Unchecked, 6.5s Time] [2025-02-08 06:23:45,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2025-02-08 06:23:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 249. [2025-02-08 06:23:45,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 153 states have (on average 1.6666666666666667) internal successors, (255), 233 states have internal predecessors, (255), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 06:23:45,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 279 transitions. [2025-02-08 06:23:45,967 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 279 transitions. Word has length 111 [2025-02-08 06:23:45,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:45,967 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 279 transitions. [2025-02-08 06:23:45,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 37 states have internal predecessors, (73), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-08 06:23:45,967 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 279 transitions. [2025-02-08 06:23:45,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-08 06:23:45,968 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:45,968 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 06:23:45,992 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 06:23:46,171 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 06:23:46,172 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 84 more)] === [2025-02-08 06:23:46,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:46,172 INFO L85 PathProgramCache]: Analyzing trace with hash 520803089, now seen corresponding path program 1 times [2025-02-08 06:23:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:46,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876448429] [2025-02-08 06:23:46,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:46,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:46,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-08 06:23:46,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-08 06:23:46,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:46,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:46,948 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 06:23:46,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:46,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876448429] [2025-02-08 06:23:46,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876448429] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:23:46,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152509182] [2025-02-08 06:23:46,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:46,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:46,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:46,956 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 06:23:46,957 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 06:23:47,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-08 06:23:47,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-08 06:23:47,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:47,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:47,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-08 06:23:47,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:23:47,317 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 06:23:47,345 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-08 06:23:47,345 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 06:23:47,388 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-08 06:23:47,388 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 06:23:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 710 proven. 2 refuted. 0 times theorem prover too weak. 523 trivial. 145 not checked. [2025-02-08 06:23:47,400 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:23:47,678 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-08 06:23:47,678 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 06:23:47,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 710 proven. 147 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2025-02-08 06:23:47,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152509182] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:23:47,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:23:47,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 18 [2025-02-08 06:23:47,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791746456] [2025-02-08 06:23:47,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:23:47,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 06:23:47,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:47,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 06:23:47,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=256, Unknown=1, NotChecked=32, Total=342 [2025-02-08 06:23:47,691 INFO L87 Difference]: Start difference. First operand 249 states and 279 transitions. Second operand has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-08 06:23:48,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:23:48,379 INFO L93 Difference]: Finished difference Result 352 states and 402 transitions. [2025-02-08 06:23:48,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 06:23:48,380 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 113 [2025-02-08 06:23:48,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:23:48,382 INFO L225 Difference]: With dead ends: 352 [2025-02-08 06:23:48,382 INFO L226 Difference]: Without dead ends: 352 [2025-02-08 06:23:48,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 216 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=420, Unknown=1, NotChecked=42, Total=552 [2025-02-08 06:23:48,384 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 144 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 374 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:23:48,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 2352 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1342 Invalid, 0 Unknown, 374 Unchecked, 0.6s Time] [2025-02-08 06:23:48,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2025-02-08 06:23:48,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 246. [2025-02-08 06:23:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 153 states have (on average 1.6470588235294117) internal successors, (252), 230 states have internal predecessors, (252), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-08 06:23:48,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 276 transitions. [2025-02-08 06:23:48,393 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 276 transitions. Word has length 113 [2025-02-08 06:23:48,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:23:48,393 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 276 transitions. [2025-02-08 06:23:48,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-08 06:23:48,394 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 276 transitions. [2025-02-08 06:23:48,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-08 06:23:48,395 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:23:48,396 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 06:23:48,404 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 06:23:48,600 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 06:23:48,600 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 84 more)] === [2025-02-08 06:23:48,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:23:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash 520803090, now seen corresponding path program 1 times [2025-02-08 06:23:48,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:23:48,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573991312] [2025-02-08 06:23:48,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:48,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:23:48,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-08 06:23:48,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-08 06:23:48,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:48,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:50,234 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 06:23:50,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:23:50,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573991312] [2025-02-08 06:23:50,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573991312] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:23:50,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456339571] [2025-02-08 06:23:50,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:23:50,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:23:50,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:23:50,237 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 06:23:50,238 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 06:23:50,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-08 06:23:51,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-08 06:23:51,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:23:51,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:23:51,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 1221 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-02-08 06:23:51,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:23:51,715 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 06:23:53,339 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|) (= (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 06:23:53,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:23:53,421 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 06:23:53,439 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-02-08 06:23:53,439 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 17 treesize of output 21 [2025-02-08 06:23:53,568 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 06:23:53,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:23:53,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 06:23:53,631 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2025-02-08 06:23:53,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2025-02-08 06:23:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1380 backedges. 549 proven. 254 refuted. 0 times theorem prover too weak. 266 trivial. 311 not checked. [2025-02-08 06:23:53,742 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:23:53,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456339571] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:23:53,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 06:23:53,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 31] total 52 [2025-02-08 06:23:53,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526281369] [2025-02-08 06:23:53,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 06:23:53,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-02-08 06:23:53,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:23:53,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-02-08 06:23:53,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2574, Unknown=2, NotChecked=206, Total=2970 [2025-02-08 06:23:53,888 INFO L87 Difference]: Start difference. First operand 246 states and 276 transitions. Second operand has 53 states, 51 states have (on average 1.9215686274509804) internal successors, (98), 50 states have internal predecessors, (98), 4 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-08 06:23:57,935 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 06:24:02,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:24:06,391 WARN L539 Checker$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 06:24:10,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2025-02-08 06:24:14,745 WARN L539 Checker$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 06:24:18,889 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]